Podcast
Questions and Answers
What results from crossing two animals or plants of different varieties?
What results from crossing two animals or plants of different varieties?
- Purebred offspring
- Hybrids (correct)
- Transgenic organisms
- Clones
Which crops were primarily impacted during the Green Revolution?
Which crops were primarily impacted during the Green Revolution?
- Sugarcane, cotton, and tobacco
- Wheat, corn, and rice (correct)
- Soybeans, oats, and barley
- Potatoes, yams, and quinoa
Which of the following was a significant criticism of the Green Revolution?
Which of the following was a significant criticism of the Green Revolution?
- Increased soil fertility
- Displacement of tenant farmers (correct)
- Increased crop biodiversity
- Lower birth rates
Which farming method does NOT use synthetic pesticides?
Which farming method does NOT use synthetic pesticides?
What factor can cause fluctuations in food prices in developed countries?
What factor can cause fluctuations in food prices in developed countries?
What is one of the environmental impacts of intensive agriculture?
What is one of the environmental impacts of intensive agriculture?
What term describes the reliance on purchased inputs during the Green Revolution?
What term describes the reliance on purchased inputs during the Green Revolution?
Which genetic source was corn derived from?
Which genetic source was corn derived from?
What is the term for the natural inclination of plants to release seeds when mature?
What is the term for the natural inclination of plants to release seeds when mature?
What type of soil condition is essential for crop production?
What type of soil condition is essential for crop production?
What is the feed conversion ratio (FCR) primarily used to measure?
What is the feed conversion ratio (FCR) primarily used to measure?
Agriculture that often leads to subsistence farming typically involves the use of which type of seeds?
Agriculture that often leads to subsistence farming typically involves the use of which type of seeds?
Which of these practices is NOT mentioned as a key aspect of crop production?
Which of these practices is NOT mentioned as a key aspect of crop production?
What is a major consequence of the rising consumption of meat in countries like China?
What is a major consequence of the rising consumption of meat in countries like China?
What challenges do farmers face with seed dispersal?
What challenges do farmers face with seed dispersal?
Which of the following best describes the farming practices of smallholders?
Which of the following best describes the farming practices of smallholders?
What is considered the first step towards a developed civilization?
What is considered the first step towards a developed civilization?
What factor significantly contributed to the domestication of crops?
What factor significantly contributed to the domestication of crops?
Approximately how many years ago did agriculture begin?
Approximately how many years ago did agriculture begin?
Which of the following statements about farming demographics in developing countries is accurate?
Which of the following statements about farming demographics in developing countries is accurate?
What was a major technological advancement utilized by H. erectus?
What was a major technological advancement utilized by H. erectus?
Which type of agriculture practice leads to higher production per hectare?
Which type of agriculture practice leads to higher production per hectare?
What does the biological species concept define as essential for a group to be classified as a species?
What does the biological species concept define as essential for a group to be classified as a species?
Where are the centers of origin for many crop plants thought to be located?
Where are the centers of origin for many crop plants thought to be located?
What is the relationship between education and population growth?
What is the relationship between education and population growth?
What concept is associated with the idea that population growth can lead to environmental issues?
What concept is associated with the idea that population growth can lead to environmental issues?
Which of the following statements about food security is most accurate?
Which of the following statements about food security is most accurate?
What potential consequence is associated with a doubling population scenario?
What potential consequence is associated with a doubling population scenario?
What environmental challenge is exacerbated by increasing population densities?
What environmental challenge is exacerbated by increasing population densities?
Which factor is most likely to contribute to the phenomenon of individuals going to bed hungry?
Which factor is most likely to contribute to the phenomenon of individuals going to bed hungry?
What premium measure indicates a potential challenge in maintaining population growth relative to resource availability?
What premium measure indicates a potential challenge in maintaining population growth relative to resource availability?
Which proposed solution is most effective in slowing population growth according to historical patterns?
Which proposed solution is most effective in slowing population growth according to historical patterns?
What underlying issue is often associated with the rise of food shortages in relation to population dynamics?
What underlying issue is often associated with the rise of food shortages in relation to population dynamics?
What is a common misconception about the relationship between population growth and environmental stress?
What is a common misconception about the relationship between population growth and environmental stress?
Trichinosis is mostly associated with _____
Trichinosis is mostly associated with _____
More education leads to _____ children born to a woman in her childbearing years.
More education leads to _____ children born to a woman in her childbearing years.
An estimated 828 million people go to bed _____ every night.
An estimated 828 million people go to bed _____ every night.
The average number of _____ per woman influences population growth.
The average number of _____ per woman influences population growth.
Geographically, population dynamics are often analyzed in relation to _____ catastrophes.
Geographically, population dynamics are often analyzed in relation to _____ catastrophes.
Fleshy fruits are divided into three categories: simple fruit, aggregate fruit, and ______ fruit.
Fleshy fruits are divided into three categories: simple fruit, aggregate fruit, and ______ fruit.
A simple fruit is formed from ______ ovary of one flower.
A simple fruit is formed from ______ ovary of one flower.
An example of an aggregate fruit is a ______.
An example of an aggregate fruit is a ______.
A ______ is not considered an aggregate fruit, despite being often mistaken for one.
A ______ is not considered an aggregate fruit, despite being often mistaken for one.
Many types of simple fruits are classified as ______, such as tomatoes.
Many types of simple fruits are classified as ______, such as tomatoes.
Which category of fleshy fruit is formed from multiple ovaries of a single flower?
Which category of fleshy fruit is formed from multiple ovaries of a single flower?
Which of the following fruits is categorized as a simple fruit?
Which of the following fruits is categorized as a simple fruit?
What is the primary distinction between aggregate fruits and multiple fruits?
What is the primary distinction between aggregate fruits and multiple fruits?
Which example is not classified as an aggregate fruit?
Which example is not classified as an aggregate fruit?
What type of fruit is formed from many ovaries of more than one flower?
What type of fruit is formed from many ovaries of more than one flower?
What is the primary structural difference between simple and aggregate fruits?
What is the primary structural difference between simple and aggregate fruits?
How are multiple fruits formed and provide an example?
How are multiple fruits formed and provide an example?
Explain why strawberries are not categorized as aggregate fruits.
Explain why strawberries are not categorized as aggregate fruits.
Identify and describe one type of simple fruit and provide an example.
Identify and describe one type of simple fruit and provide an example.
What common feature distinguishes dry fruits from fleshy fruits?
What common feature distinguishes dry fruits from fleshy fruits?
Fleshy fruits are divided into three categories: simple fruit, aggregate fruit, and ______ fruit.
Fleshy fruits are divided into three categories: simple fruit, aggregate fruit, and ______ fruit.
An example of a simple fruit is a ______.
An example of a simple fruit is a ______.
Aggregate fruits are formed from many ______ on one flower.
Aggregate fruits are formed from many ______ on one flower.
______ is not considered an aggregate fruit, despite being often mistaken for one.
______ is not considered an aggregate fruit, despite being often mistaken for one.
An example of a multiple fruit is a ______.
An example of a multiple fruit is a ______.
Which fruit is correctly classified as a simple fruit?
Which fruit is correctly classified as a simple fruit?
What distinguishes an aggregate fruit from a simple fruit?
What distinguishes an aggregate fruit from a simple fruit?
Which of the following is NOT true about a multiple fruit?
Which of the following is NOT true about a multiple fruit?
Which of the following fruits would be incorrectly categorized as an aggregate fruit?
Which of the following fruits would be incorrectly categorized as an aggregate fruit?
Which best represents the primary characteristic of berries?
Which best represents the primary characteristic of berries?
How can you differentiate between simple fruits and aggregate fruits?
How can you differentiate between simple fruits and aggregate fruits?
What characteristic defines a multiple fruit?
What characteristic defines a multiple fruit?
Why is a strawberry not classified as an aggregate fruit despite common misconceptions?
Why is a strawberry not classified as an aggregate fruit despite common misconceptions?
List one example of a simple fruit and explain why it fits this category.
List one example of a simple fruit and explain why it fits this category.
Discuss how the classification of fruits can impact agricultural practices.
Discuss how the classification of fruits can impact agricultural practices.
What are essential amino acids and why are they important?
What are essential amino acids and why are they important?
What are some methods to prevent vitamin deficiencies?
What are some methods to prevent vitamin deficiencies?
Explain the role of protein digestibility in protein scores.
Explain the role of protein digestibility in protein scores.
What are essential amino acids, and why are they important for human health?
What are essential amino acids, and why are they important for human health?
Why is Vitamin D considered both a vitamin and a hormone?
Why is Vitamin D considered both a vitamin and a hormone?
Name two micronutrients that are commonly deficient in diets and the potential health implications of these deficiencies.
Name two micronutrients that are commonly deficient in diets and the potential health implications of these deficiencies.
What are micronutrients, and how do they differ from macronutrients?
What are micronutrients, and how do they differ from macronutrients?
Discuss the significance of the intestinal microbiome in human health.
Discuss the significance of the intestinal microbiome in human health.
How does a deficiency in vitamin C affect human physiology?
How does a deficiency in vitamin C affect human physiology?
What cultural practices can improve protein assimilation using complementary foods?
What cultural practices can improve protein assimilation using complementary foods?
Explain the process of protein assimilation in the human body.
Explain the process of protein assimilation in the human body.
How can cooking and mastication impact protein digestibility?
How can cooking and mastication impact protein digestibility?
What role does the intestinal microbiome play in nutrient absorption and overall health?
What role does the intestinal microbiome play in nutrient absorption and overall health?
What is the relationship between antioxidants and free radicals?
What is the relationship between antioxidants and free radicals?
What are some dietary sources of omega-3 and omega-6 fatty acids, and their significance?
What are some dietary sources of omega-3 and omega-6 fatty acids, and their significance?
What role do genetically engineered plants play in nutrition?
What role do genetically engineered plants play in nutrition?
Describe how trans fats are formed and their impact on health.
Describe how trans fats are formed and their impact on health.
How do the functions of saturated and unsaturated fats differ in the body?
How do the functions of saturated and unsaturated fats differ in the body?
What is the recommended approach to incorporating more plant-based foods in accordance with health guidelines?
What is the recommended approach to incorporating more plant-based foods in accordance with health guidelines?
What metabolic processes are affected by an imbalance in energy expenditure?
What metabolic processes are affected by an imbalance in energy expenditure?
What are essential amino acids and why are they important for human health?
What are essential amino acids and why are they important for human health?
List two major micronutrients and their primary roles in human nutrition.
List two major micronutrients and their primary roles in human nutrition.
What are the common symptoms of vitamin C deficiency?
What are the common symptoms of vitamin C deficiency?
How does the intestine assimilate proteins and what influences this process?
How does the intestine assimilate proteins and what influences this process?
What role does the intestinal microbiome play in human nutrition?
What role does the intestinal microbiome play in human nutrition?
Why is it important to consume a varied diet in relation to amino acids?
Why is it important to consume a varied diet in relation to amino acids?
What are some consequences of micronutrient deficiencies on health?
What are some consequences of micronutrient deficiencies on health?
Identify one method to enhance protein absorption in the body.
Identify one method to enhance protein absorption in the body.
How can a diverse intestinal microbiome affect protein assimilation?
How can a diverse intestinal microbiome affect protein assimilation?
What are the potential effects of vitamin D deficiency on bone health?
What are the potential effects of vitamin D deficiency on bone health?
What are essential amino acids and why are they crucial for humans?
What are essential amino acids and why are they crucial for humans?
How do micronutrient deficiencies impact human health?
How do micronutrient deficiencies impact human health?
Why is vitamin B12 particularly challenging for vegetarians and vegans?
Why is vitamin B12 particularly challenging for vegetarians and vegans?
Explain the role of the intestinal microbiome in protein assimilation.
Explain the role of the intestinal microbiome in protein assimilation.
How can nutritional deficiencies trigger chronic health conditions?
How can nutritional deficiencies trigger chronic health conditions?
What is the connection between vegetarian diets and protein sources?
What is the connection between vegetarian diets and protein sources?
Describe the health implications of a diet low in micronutrients.
Describe the health implications of a diet low in micronutrients.
What role does the intestinal microbiome play in vitamin absorption?
What role does the intestinal microbiome play in vitamin absorption?
Why is adequate protein intake essential for maintaining muscle mass?
Why is adequate protein intake essential for maintaining muscle mass?
How can dietary choices influence the development of vitamin deficiencies?
How can dietary choices influence the development of vitamin deficiencies?
What are essential amino acids primarily obtained from?
What are essential amino acids primarily obtained from?
Which statement regarding protein digestibility is true?
Which statement regarding protein digestibility is true?
Which method is NOT listed as a way to prevent vitamin deficiencies?
Which method is NOT listed as a way to prevent vitamin deficiencies?
Which of the following is a potential consequence of vitamin D deficiency?
Which of the following is a potential consequence of vitamin D deficiency?
What role does cholecalciferol primarily play in the body?
What role does cholecalciferol primarily play in the body?
What is one primary function of antioxidants in the human body?
What is one primary function of antioxidants in the human body?
Which of the following substances is classified as a micronutrient?
Which of the following substances is classified as a micronutrient?
Which factor is cited as influencing the complexity of plant biochemistry compared to animal biochemistry?
Which factor is cited as influencing the complexity of plant biochemistry compared to animal biochemistry?
Which type of bacteria are essential for proper health as part of the intestinal microbiome?
Which type of bacteria are essential for proper health as part of the intestinal microbiome?
What is a common misconception about antioxidants?
What is a common misconception about antioxidants?
Which type of lipids are formed by combining glycerol and fatty acids?
Which type of lipids are formed by combining glycerol and fatty acids?
What is the primary purpose of hydrogenation in food processing?
What is the primary purpose of hydrogenation in food processing?
Which of the following fatty acids is classified as essential for human metabolism?
Which of the following fatty acids is classified as essential for human metabolism?
Basal metabolism comprises which component of total energy expenditure?
Basal metabolism comprises which component of total energy expenditure?
What was one of the main concerns regarding the modern diet and energy consumption?
What was one of the main concerns regarding the modern diet and energy consumption?
What are the basic structural components of proteins?
What are the basic structural components of proteins?
Which statement is true regarding the revised Canada Food Guide of 2019?
Which statement is true regarding the revised Canada Food Guide of 2019?
Which type of fats can result from the artificial process of hydrogenation?
Which type of fats can result from the artificial process of hydrogenation?
What is the significance of the R group in amino acids?
What is the significance of the R group in amino acids?
Which term describes the metabolic breakdown of nutrients during daily activities?
Which term describes the metabolic breakdown of nutrients during daily activities?
What is a significant health risk associated with nutritional deficiencies?
What is a significant health risk associated with nutritional deficiencies?
Which of the following is a common dietary source of protein for vegetarians and vegans?
Which of the following is a common dietary source of protein for vegetarians and vegans?
Why is vitamin B12 difficult for vegetarians and vegans to obtain?
Why is vitamin B12 difficult for vegetarians and vegans to obtain?
What essential role does nitrogen play in human health?
What essential role does nitrogen play in human health?
What is a key distinction between organic foods and conventional foods?
What is a key distinction between organic foods and conventional foods?
Which of the following best describes the relationship between macromolecules and human health?
Which of the following best describes the relationship between macromolecules and human health?
Which of these is a consequence of a diet lacking in essential nutrients?
Which of these is a consequence of a diet lacking in essential nutrients?
What is the primary purpose of carbohydrates in human nutrition?
What is the primary purpose of carbohydrates in human nutrition?
What distinguishes vitamins from macromolecule classes?
What distinguishes vitamins from macromolecule classes?
Which dietary choice can help prevent health issues associated with nutritional deficiencies?
Which dietary choice can help prevent health issues associated with nutritional deficiencies?
Which statement best defines macromolecules?
Which statement best defines macromolecules?
What is a potential drawback of relying solely on organic food production?
What is a potential drawback of relying solely on organic food production?
What distinguishes starch from cellulose at the molecular level?
What distinguishes starch from cellulose at the molecular level?
What defines the structure of monosaccharides?
What defines the structure of monosaccharides?
Which of the following nutrients must be specifically obtained from food for the body’s growth and function?
Which of the following nutrients must be specifically obtained from food for the body’s growth and function?
How are energy requirements in nutrition primarily measured?
How are energy requirements in nutrition primarily measured?
What type of bond predominantly characterizes the storage molecule starch?
What type of bond predominantly characterizes the storage molecule starch?
What role do bioactive molecules play in nutrition?
What role do bioactive molecules play in nutrition?
In terms of nutrient requirements, what does it mean for a value to be above the established minimum?
In terms of nutrient requirements, what does it mean for a value to be above the established minimum?
Why is understanding the structure of lipids crucial in human nutrition?
Why is understanding the structure of lipids crucial in human nutrition?
Where was rice primarily domesticated?
Where was rice primarily domesticated?
What is one of the traits included in the domestication syndrome?
What is one of the traits included in the domestication syndrome?
What describes the gradual decrease in genetic diversity within crop plants?
What describes the gradual decrease in genetic diversity within crop plants?
Which process leads to the introduction of new traits and increased genetic diversity in crops?
Which process leads to the introduction of new traits and increased genetic diversity in crops?
Which of the following statements is true about polyploidy in plants?
Which of the following statements is true about polyploidy in plants?
What is a significant disadvantage of decreased genetic diversity in crops?
What is a significant disadvantage of decreased genetic diversity in crops?
What is the term for the loss of genetic diversity driven by the replacement of older varieties with higher-yielding options?
What is the term for the loss of genetic diversity driven by the replacement of older varieties with higher-yielding options?
Which trait is defined as the ability of a crop to not release seeds when mature?
Which trait is defined as the ability of a crop to not release seeds when mature?
What is a potential outcome of hybridization between crops and their wild relatives?
What is a potential outcome of hybridization between crops and their wild relatives?
Describe the significance of landraces in crop cultivation.
Describe the significance of landraces in crop cultivation.
What are the key features that characterize the domestication syndrome in crops?
What are the key features that characterize the domestication syndrome in crops?
Explain the difference between autopolyploidy and allopolyploidy.
Explain the difference between autopolyploidy and allopolyploidy.
How does decreased genetic diversity affect crop evolution?
How does decreased genetic diversity affect crop evolution?
Discuss the implications of hybridization of crops with their wild relatives.
Discuss the implications of hybridization of crops with their wild relatives.
What role does genome sequencing play in understanding plant evolution?
What role does genome sequencing play in understanding plant evolution?
List two advantages and two disadvantages of decreased genetic diversity in crops.
List two advantages and two disadvantages of decreased genetic diversity in crops.
Identify the regions where rice and maize were domesticated.
Identify the regions where rice and maize were domesticated.
What is genetic erosion and how does it occur?
What is genetic erosion and how does it occur?
What are the implications of polyploidy in agricultural crops?
What are the implications of polyploidy in agricultural crops?
Rice was domesticated in _____ and Western Africa
Rice was domesticated in _____ and Western Africa
Maize and beans were domesticated in the ________________
Maize and beans were domesticated in the ________________
Domestication syndrome includes traits such as seed retention and loss of sensitivity to ____________
Domestication syndrome includes traits such as seed retention and loss of sensitivity to ____________
Crop evolution was marked by genetic ________ that decreased diversity
Crop evolution was marked by genetic ________ that decreased diversity
Genetic ___________ represents the loss of genetic diversity in a crop plant
Genetic ___________ represents the loss of genetic diversity in a crop plant
Hybrids often arise from the hybridization of crops and their wild relatives, leading to ________
Hybrids often arise from the hybridization of crops and their wild relatives, leading to ________
Polyploidy in plants is described as _________: having more than two complete chromosome sets
Polyploidy in plants is described as _________: having more than two complete chromosome sets
Decreased genetic diversity in crops can lead to susceptibility to ________ and disease
Decreased genetic diversity in crops can lead to susceptibility to ________ and disease
In some cases, hybridization has led to weeds that are difficult to ________
In some cases, hybridization has led to weeds that are difficult to ________
Wheat was domesticated in the ________ East
Wheat was domesticated in the ________ East
What is a characteristic feature of simple fruits?
What is a characteristic feature of simple fruits?
Which of the following is an example of a multiple fruit?
Which of the following is an example of a multiple fruit?
Which fruit is commonly misidentified as an aggregate fruit but is not?
Which fruit is commonly misidentified as an aggregate fruit but is not?
What distinguishes aggregate fruits from simple fruits?
What distinguishes aggregate fruits from simple fruits?
Which type of fleshy fruit is most likely to be confused due to its structural characteristics?
Which type of fleshy fruit is most likely to be confused due to its structural characteristics?
Which crop is primarily categorized as a root or tuber type?
Which crop is primarily categorized as a root or tuber type?
Which of the following crops is most correctly associated with its geographical origin?
Which of the following crops is most correctly associated with its geographical origin?
Which major food crop is known for providing primarily protein and fiber?
Which major food crop is known for providing primarily protein and fiber?
The majority of sweet potatoes are believed to have originated in which geographic region?
The majority of sweet potatoes are believed to have originated in which geographic region?
Which crop is highlighted as a significant source of carbohydrates and energy?
Which crop is highlighted as a significant source of carbohydrates and energy?
Which of the following crops is recognized for its high demand for flooded farming conditions?
Which of the following crops is recognized for its high demand for flooded farming conditions?
What is a primary distinguishing feature of legumes compared to other food crops?
What is a primary distinguishing feature of legumes compared to other food crops?
Which crop is known to have originated from Mesoamerica?
Which crop is known to have originated from Mesoamerica?
Which food crop type primarily supplies vitamins and minerals?
Which food crop type primarily supplies vitamins and minerals?
Which crop is attributed to having originated in sub-Saharan Africa?
Which crop is attributed to having originated in sub-Saharan Africa?
Identify two major food crop types and provide a brief description of each.
Identify two major food crop types and provide a brief description of each.
What is the primary region believed to be the origin of wheat?
What is the primary region believed to be the origin of wheat?
Discuss the significance of maize's origin and its primary region of domestication.
Discuss the significance of maize's origin and its primary region of domestication.
Outline the geographic origin of sorghum and its adaptability to climates.
Outline the geographic origin of sorghum and its adaptability to climates.
What are the challenges associated with the soil conditions needed for barley cultivation?
What are the challenges associated with the soil conditions needed for barley cultivation?
Explain the historical significance of the region believed to be the origin of rice.
Explain the historical significance of the region believed to be the origin of rice.
Briefly describe the two primary regions from which potatoes and sweet potatoes are derived.
Briefly describe the two primary regions from which potatoes and sweet potatoes are derived.
What climatic conditions are essential for the successful cultivation of rice?
What climatic conditions are essential for the successful cultivation of rice?
Identify the primary regions where maize is predominantly grown and explain why these areas are suitable.
Identify the primary regions where maize is predominantly grown and explain why these areas are suitable.
Discuss the ideal growing conditions for cassava and its significance as a staple crop.
Discuss the ideal growing conditions for cassava and its significance as a staple crop.
Describe the environmental requirements for successful soybean cultivation.
Describe the environmental requirements for successful soybean cultivation.
What are the critical soil and climate conditions necessary for potato cultivation?
What are the critical soil and climate conditions necessary for potato cultivation?
Explain the significance of sugarcane cultivation and the conditions necessary for its growth.
Explain the significance of sugarcane cultivation and the conditions necessary for its growth.
What unique climatic requirements must be met for the cultivation of cocoa?
What unique climatic requirements must be met for the cultivation of cocoa?
What is the primary distinguishing factor for the cultivation of bananas compared to other major crops?
What is the primary distinguishing factor for the cultivation of bananas compared to other major crops?
______ is a staple grain crop that originated in the Fertile Crescent.
______ is a staple grain crop that originated in the Fertile Crescent.
______ is a major source of calories for a significant portion of the world's population, particularly in Asia.
______ is a major source of calories for a significant portion of the world's population, particularly in Asia.
______ is a highly important cereal grain, native to the Americas.
______ is a highly important cereal grain, native to the Americas.
The Andes Mountains in South America are known for the origin of ______, a key root vegetable.
The Andes Mountains in South America are known for the origin of ______, a key root vegetable.
Originally domesticated in East Asia, ______ is widely used as a protein source.
Originally domesticated in East Asia, ______ is widely used as a protein source.
______ is a primary source of sugar and originated in areas of Southeast Asia.
______ is a primary source of sugar and originated in areas of Southeast Asia.
Originating in South America, ______ serves as a significant source of carbohydrates and vitamins.
Originating in South America, ______ serves as a significant source of carbohydrates and vitamins.
______ is a root crop considered a calorie source for millions, especially in tropical climates.
______ is a root crop considered a calorie source for millions, especially in tropical climates.
Native to the Americas, ______ is a widely farmed legume providing protein.
Native to the Americas, ______ is a widely farmed legume providing protein.
______ is a crucial fruit source, which originated in Southeast Asia or New Guinea.
______ is a crucial fruit source, which originated in Southeast Asia or New Guinea.
Flashcards
6 Major Centers of Origin
6 Major Centers of Origin
Geographic areas where many important food crops first evolved.
Seed Dispersal
Seed Dispersal
The process of seeds being moved from the plant to other locations.
Natural Shattering
Natural Shattering
Plants naturally releasing seeds when ripe.
Shatter-Resistant Plants
Shatter-Resistant Plants
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Subsistence Farming
Subsistence Farming
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Feed Conversion Ratio (FCR)
Feed Conversion Ratio (FCR)
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Major Food Crops
Major Food Crops
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Domesticated Plants
Domesticated Plants
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Hybrids in Agriculture
Hybrids in Agriculture
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Green Revolution
Green Revolution
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Green Revolution Problems
Green Revolution Problems
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Organic Farming
Organic Farming
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Farming Demographics
Farming Demographics
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Industrial vs. Organic Farming
Industrial vs. Organic Farming
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Agricultural Economic Impacts
Agricultural Economic Impacts
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Science-based practices
Science-based practices
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Agriculture
Agriculture
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Intensive Agriculture Impacts
Intensive Agriculture Impacts
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Sustainability Concerns about intensive agriculture
Sustainability Concerns about intensive agriculture
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Neolithic Revolution
Neolithic Revolution
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Hunter-gatherers
Hunter-gatherers
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Biological Species Concept
Biological Species Concept
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Agriculture Origin
Agriculture Origin
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Centers of Origin
Centers of Origin
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Trichinosis
Trichinosis
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Malthus's Theory
Malthus's Theory
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Population Growth/Decrease
Population Growth/Decrease
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Food Production & Poverty
Food Production & Poverty
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Education/Children
Education/Children
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Trichinosis cause
Trichinosis cause
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Malthus's Theory
Malthus's Theory
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Population growth/decrease
Population growth/decrease
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Food Production & Poverty
Food Production & Poverty
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Education/Children
Education/Children
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Trichinosis
Trichinosis
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Malthus's Theory
Malthus's Theory
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Population Growth/Decrease
Population Growth/Decrease
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Food Production & Poverty
Food Production & Poverty
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Education/Children
Education/Children
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Simple Fruit
Simple Fruit
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Aggregate Fruit
Aggregate Fruit
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Multiple Fruit
Multiple Fruit
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Berry
Berry
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Strawberry (Classification)
Strawberry (Classification)
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Simple Fruit
Simple Fruit
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Aggregate Fruit
Aggregate Fruit
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Multiple Fruit
Multiple Fruit
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Strawberry Classification
Strawberry Classification
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Berry (fruit type)
Berry (fruit type)
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Simple Fruit
Simple Fruit
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Aggregate Fruit
Aggregate Fruit
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Multiple Fruit
Multiple Fruit
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Strawberry (type)
Strawberry (type)
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Berry (fruit type)
Berry (fruit type)
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Simple Fruit
Simple Fruit
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Aggregate Fruit
Aggregate Fruit
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Multiple Fruit
Multiple Fruit
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Strawberry (classification)
Strawberry (classification)
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Berry (type)
Berry (type)
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Simple Fruit
Simple Fruit
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Aggregate Fruit
Aggregate Fruit
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Strawberry (classification)
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Simple Fruit
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Strawberry (classification)
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Berry (fruit type)
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Macromolecules
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Monosaccharides
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Starch
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Cellulose
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Energy requirements
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Nutrient requirements
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Nutrients
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Essential Amino Acids
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Protein Score
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Vitamin Deficiencies Prevention Methods
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Vitamin D
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Minerals
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Bioactive Molecules (Plants)
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Functional Foods
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Macromolecule Classes
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Vitamin B12
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Organic Foods vs. Health
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Carbohydrates
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Protein Monomers
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Nitrogen in Proteins
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Health Implications of Macronutrients
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Importance of Diet
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Triglycerides
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Hydrogenation
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Essential Fatty Acids
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Protein Polymer
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Nutrients
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Lipids
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Monosaccharides
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Polysaccharides
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Starch
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Cellulose
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Energy requirements
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Organic Foods
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Protein Score
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Minerals
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Bioactive Molecules (Plants)
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Probiotic Bacteria
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Functional Foods
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Domestication of crops
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Centers of origin
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Domestication syndrome
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Landraces
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Decreased genetic diversity
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Genetic erosion
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Disadvantages of decreased genetic diversity
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Domestication of wheat
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Maize and bean domestication
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Domesticated maize ancestor
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Domestication syndrome
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Genetic diversity decrease in crop evolution
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Decreased genetic diversity advantages
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Decreased genetic diversity disadvantages
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Crop hybridization benefits
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Domestication of Wheat
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Domestication of Rice
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Domestication of Maize and Beans
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Domestication Ancestor (Maize)
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Domestication Syndrome
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Decreased Genetic Diversity
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Genetic Uniformity Advantages
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Hybridization Advantages
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Hybridization Disadvantages
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Polyploidy
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Simple Fruit
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Aggregate Fruit
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Multiple Fruit
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Strawberry (classification)
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Berry (fruit type)
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Major Food Crops
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Grain Crops
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Legume Crops
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Root/Tuber Crops
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Crop Origins
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Rice Origin
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Climate Considerations
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Global Crop Production
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Crop Adaptations
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Major Crop Types
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Sorghum
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Barley Origins
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Major Grain Crops
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Wheat Origin
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Rice Origin
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Maize (Corn) Origin
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Maize (Corn)
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Potato
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Sweet Potato
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Cassava
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Soybean
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Sugarcane
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Wheat
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Rice
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Maize (Corn)
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Potatoes
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Sugarcane
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Cassava
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Bananas/Plantains
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Study Notes
A Changing Global Food System
- 40% of the global workforce is involved in farming (1.3 billion people)
- There are 570 million farms worldwide
- Developing countries have smaller farms (<1 hectare), 50% of their population works or lives on farms
- In the US, farms are larger (2,000 hectares), only 1% are farmers and 2% live on farms
- Farmers have direct knowledge of food practices, regardless of the location or size of the farm
Farming Demographics
- Globally, 9% of farms are in sub-Saharan Africa (41 countries)
- 4% of farms are in high-income countries (46)
- 9% of farms are in East Asia and the Pacific, excluding China (14 countries)
- 24% of farms are in India
- 35% of farms are in China
- 6% are in South Asia, excluding India (6)
- 3% are in Middle East and North Africa (12)
- 4% are in Latin America and the Caribbean (26)
- 7% are in Europe and Central Asia (14)
- 47% are in upper middle-income countries (47)
- 36% are in lower middle-income countries (38)
Science-Based Practices
- Science-based farming practices in both developed and developing countries increase production per hectare
- Agriculture started years ago, and was the first step towards a developed civilization
Hunters and Gatherers
- Humans originated 4 million years ago
- Homo (2.5 million years ago): increase in brain capacity; oldest known stone tools
- Homo erectus (2-0.5 million years ago): evidence and use of fire and cooking
- Homo neanderthalensis (250,000 - 30,000 years ago): shaped tools, evidence of starch consumption (grains) found on fossilized teeth, bitters and medicinal compounds
- Homo sapiens (50,000 years ago): grinding seeds; wider range of foods
H. neanderthalensis
- The term “species” has different meanings
- The biological species concept defines a species as a group that can interbreed to produce fertile offspring
- Neanderthals and Homo sapiens did not interbreed.
- Humans have Neanderthal DNA in their genome
- One theory is that humans exterminated Neanderthals.
H. sapiens Developed Advanced Tools
- H. sapiens developed a sickle made of deer antler with embedded flint chips to cut grain stalks
A Modern Experiment
- A wild wheat ancestor was harvested using a scythe vs. an electric weed trimmer to show efficiency in harvesting techniques.
Agriculture Arose Multiple Times
- Centers of origin were locations where crop plants originated prior to domestication
- Agriculture is generally in tropical or subtropical regions
- These regions had distinct wet and dry seasons, to favour plant life cycles and efficient harvests
6 Major Centers of Origin
- Near East ("Fertile Crescent"): wheat, barley, peas, lentils, grapes, olives, figs, date palms, onions, lettuce, safflower, flax.
- China: japonica rice, millets, soybeans, adzuki beans, cabbage, oranges, limes, grapefruits, tea.
- Mesoamerica: maize, common beans, squash, sweet potatoes, peppers, tomatoes, vanilla, upland cotton, sisal.
- South America: potato, common beans, groundnut, peppers, pineapple, cassava, coca, yerba maté, pima cotton.
- Sub-Saharan Africa: sorghum, African rice, pearl millet, teff, cowpeas, Bambara groundnuts, coffee, okra, melons, kenaf
- India: indica rice, mung beans, pigeon peas, ricebeans.
Plants Make Seeds for Dispersal
- Seeds contain nutrients to aid germination
- Starch (in wheat) and oils (in canola) are two of these nutrients
- The method of releasing seeds when ripe (shattering) is a difference between domesticated and wild plants. Domesticated crops require "threshing" from stalks
Natural Shattering vs. Shatter-Resistant Plants
To Make a Crop
- Plough/clear land
- Plant the crop
- Control weeds
- Constant care of crop (leads to non-nomadic life)
- Agriculture involves cultivation of soil and planting
- Note other technologies: selective breeding, plows, harvesting, canals, pumps for irrigation, removing seeds, and separating chaff.
Major Food Crops / The World's Twelve Major Food Crops
- The twelve most important food crops in the world include maize, wheat, rice, soybeans, barley, tomatoes, sweet potatoes, bananas, sorghum, yams, and potatoes
- Various regions where those crops are grown.
Livestock
Even Dedicated Carnivores Eat Plants
- Livestock are raised on plants
- Grain-fed livestock is more economical.
- Feedlots supplement food provided to livestock
- Meat consumption is correlated with soybean imports
- Farmers need to know the feed conversion ratio. (The feed conversion ratio is the amount of feed needed to produce one kilogram of product/animal protein)
Crop Production Takes Several Forms
- Requires human or animal labor. (Till the soil/sow the seeds/harvest)
- Requires fertile soil, water (rain or irrigation)
- These needs lead to subsistence farming (80% of farmers in China and Africa)
- Industrial farming uses equipment (tractors), and supplements (fertilizers)
Different Crop Production Systems
- Forest fallow (slash-and-burn, shifting cultivation)
- Short fallow
- Annual cultivation
- Multiple cropping
- Precision Agriculture
Hybrids in Agriculture
- Combining genetics is powerful.
- Offspring from different varieties show characteristics of both parents
- Artificial selection enhances desirable features by controlled breeding
- Corn was derived from teosinte, and hybrids are more powerful.
Corn Yield
- Corn yields started to increase around 1935 with the introduction of hybrid corn.
The Green Revolution
- The Green Revolution was an increase in the productivity of crops, particularly in wheat, corn, and rice
- Starting in the 1940s-60s, this led to a decrease in widespread starvation, especially in developing nations like Mexico, Brazil, India, Pakistan, and the Philippines.
Not Everyone Was Thrilled With the Green Revolution
- Improved quality of life for many
- Displaced tenant farmers
- Local economies couldn't absorb new manpower
- Birth rates remained high
- Over-reliance on purchased inputs
Problems with the Green Revolution
Organic Farming
- Uses mechanization and improved/hybrid seeds
- Crop rotation is used
- Avoids synthetic pesticides, GMO seeds, and herbicides
- Has a large yield gap compared to industrial farming to meet world food demand.
Agriculture and Food Production in Developed Countries
- Food prices are affected by fluctuations in the price of purchased inputs (e.g., oil, fertilizer, electricity, machinery)
- Food prices are affected by global economic factors
Intensive Agriculture
- Modern farming practices have a significant impact on the environment.
- Detrimental effects can be mitigated (e.g. precision agriculture)
Summary of Agriculture
- Primitive (10,000-1,000 years ago): domestication, hand tools
- Industrial Agriculture (300-200 years ago): improvements, pumps, engines, fertilizers, educational programs
- Industrial Revolution (100 years ago): genetics, transport, refrigeration, gasoline replaces steam and animal power
- Genetics, biochemistry and intensification (1940-2000): large-scale irrigation, synthetic pesticides, synthetic fertilizers, more genetic alteration, precision agriculture
- Advanced genomics and sustainability (now): cooperation, new concepts, new consumer demands
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- Guns, Germs, and Steel
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Description
Test your knowledge on agriculture, its impacts, and the significant changes brought about during the Green Revolution. Explore various farming methods, environmental effects, and the evolution of crop production. This quiz covers essential concepts in agricultural science.