Food Resources and Crop Yield Improvement
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Questions and Answers

Which nutrient does NOT contribute to body development, growth, and health?

  • Carbohydrates
  • Vitamins
  • Hydrocarbons (correct)
  • Proteins
  • Simply increasing grain production alone can solve the problem of malnutrition and hunger.

    False

    What agricultural practices can be used to improve production efficiency?

    Mixed farming, intercropping, integrated farming practices

    India will need more than a __________ tonnes of grain every year to feed its growing population.

    <p>quarter of a billion</p> Signup and view all the answers

    Match the following food sources with their respective categories:

    <p>Wheat = Cereal Chana = Pulse Milk = Animal product Rice = Cereal</p> Signup and view all the answers

    What is essential for combating the problem of hunger in agriculture?

    <p>Increasing incomes of people working in agriculture</p> Signup and view all the answers

    What is the primary benefit of inter-cropping?

    <p>Maximum utilization of nutrients</p> Signup and view all the answers

    The green revolution has not contributed to an increase in food-grain production.

    <p>False</p> Signup and view all the answers

    Weeds compete for nutrients, space, and light with crops.

    <p>True</p> Signup and view all the answers

    Name two methods used to control weeds in cultivated fields.

    <p>Manual removal and use of herbicides.</p> Signup and view all the answers

    Which country is mentioned as needing to improve its food resources due to a growing population?

    <p>India</p> Signup and view all the answers

    Insect pests can damage plants by sucking the cell sap and boring into the ______.

    <p>stem</p> Signup and view all the answers

    Match the following types of pathogens with their categories:

    <p>Bacteria = Single-celled organisms Fungi = Multi-cellular organisms Viruses = Infectious agents Pathogens = Cause diseases in plants</p> Signup and view all the answers

    Which of the following crops can be used in inter-cropping?

    <p>Maize and soyabean</p> Signup and view all the answers

    Pesticides can only control insect pests but are ineffective against weeds.

    <p>False</p> Signup and view all the answers

    What are two harmful effects of diseases caused by pathogens in plants?

    <p>Reduction in crop yield and poor plant health.</p> Signup and view all the answers

    Which of the following activities is NOT classified under improving crop yields?

    <p>Crop processing improvement</p> Signup and view all the answers

    Hybridisation refers to the crossing between genetically dissimilar plants.

    <p>True</p> Signup and view all the answers

    What is one way to incorporate desirable characteristics into crop varieties?

    <p>Hybridisation</p> Signup and view all the answers

    The major groups of activities for improving crop yields include crop variety improvement, crop production improvement, and ________ management.

    <p>crop protection</p> Signup and view all the answers

    Which of the following is classified as a macronutrient?

    <p>Calcium</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Hybridisation = Crossing between genetically dissimilar plants Genetically modified crops = Crops that have had specific genes introduced Disease resistance = Ability of crops to withstand diseases Crop yield = The amount of crop produced per unit of land</p> Signup and view all the answers

    Vermi-compost is made by using earthworms to speed up the decomposition process.

    <p>True</p> Signup and view all the answers

    What factor is NOT mentioned as necessary for the growth of different crops?

    <p>Soil type</p> Signup and view all the answers

    What is the term for the process of decomposing farm waste material in pits?

    <p>Composting</p> Signup and view all the answers

    Introducing a gene to provide desired characteristics results in traditional crops.

    <p>False</p> Signup and view all the answers

    What is the primary focus of crop variety improvement?

    <p>Finding a crop variety that can give a good yield</p> Signup and view all the answers

    The plant nutrients used in small quantities are called __________.

    <p>micronutrients</p> Signup and view all the answers

    Match the nutrient source with its nutrient type:

    <p>Air = Carbon, Oxygen Water = Hydrogen, Oxygen Soil (Macronutrients) = Nitrogen, Phosphorus Soil (Micronutrients) = Iron, Manganese</p> Signup and view all the answers

    Which nutrient deficiency affects a plant's growth and susceptibility to diseases?

    <p>Both A and B</p> Signup and view all the answers

    Green manure plants are mulched and ploughed into the soil after crop seeds are sown.

    <p>False</p> Signup and view all the answers

    What is one example of a plant that can be used for green manure?

    <p>Sun hemp</p> Signup and view all the answers

    What is one major benefit of using manure in agriculture?

    <p>Improvement of soil structure</p> Signup and view all the answers

    Organic farming systems heavily rely on chemical fertilizers.

    <p>False</p> Signup and view all the answers

    What type of wells are used to tap deep water sources?

    <p>tube wells</p> Signup and view all the answers

    In a typical irrigation system, _______ are constructed to divert water from reservoirs or rivers.

    <p>canals</p> Signup and view all the answers

    Match the type of irrigation system with its description:

    <p>Wells = Source of groundwater Canals = Diverts water from reservoirs River irrigation = Uses natural flowing water Tanks = Stores water for irrigation</p> Signup and view all the answers

    Which organic material is often used in organic farming systems?

    <p>Livestock manure</p> Signup and view all the answers

    Crop rotation is a method used in organic farming to increase diversity.

    <p>True</p> Signup and view all the answers

    Name one bio-agent used in organic farming.

    <p>blue green algae</p> Signup and view all the answers

    What is the primary purpose of broilers in poultry production?

    <p>Meat production</p> Signup and view all the answers

    Capture fishing refers to breeding fish in controlled environments.

    <p>False</p> Signup and view all the answers

    Name two types of water where fish farming can occur.

    <p>Seawater and freshwater</p> Signup and view all the answers

    Many marine fish are caught using various types of ______ from fishing boats.

    <p>nets</p> Signup and view all the answers

    Match the following fish species with their feeding habits:

    <p>Catlas = Surface feeders Rohus = Middle-zone feeders Mrigals = Bottom feeders Grass Carps = Weed feeders</p> Signup and view all the answers

    Which of the following is NOT a popular marine fish variety mentioned?

    <p>Catfish</p> Signup and view all the answers

    The use of satellites and echo-sounders aids in locating fish schools in the sea.

    <p>True</p> Signup and view all the answers

    What is a benefit of using multiple fish species in a single fishpond?

    <p>Increased fish yield</p> Signup and view all the answers

    Study Notes

    Food Resources Improvement

    • All living organisms require food, including proteins, carbohydrates, fats, vitamins, and minerals for growth and health.
    • Plants and animals are major food sources.
    • India has a large population with increasing needs, requiring a substantial increase in food production.
    • Existing land for agriculture is intensively used, so increasing production efficiency for crops and livestock is crucial.
    • Sustainable farming practices are necessary to increase production without harming the environment.
    • Access to food is also important, not just availability; people need money to buy food.

    Crop Yield Improvement

    • Efforts to meet increasing demand have led to successes like the Green Revolution and White Revolution.
    • These revolutions increased food production but put more strain on natural resources.
    • Crop variety improvement focuses on selecting high-yielding, disease-resistant, and quality varieties through breeding and genetic modification (GMOs).
    • Hybridisation (crossing between genetically dissimilar plants) and gene introduction are methods of improvement.
    • The new varieties of crops must produce high yields in different areas to be successful.
    • Crop production management, considering financial ability and technologies, needs to consider: -Nutrient management (macro- and micro-nutrients). -Water management (wells, canals, river systems, tanks, etc.). -Cropping patterns (mixed cropping, intercropping, crop rotation). -Crop protection from weeds, insects, and diseases (pesticides, herbicides etc).

    Animal Husbandry

    • Efficient management of livestock is key:
      • Cattle farming, for milk and work.
      • Poultry farming, for eggs and meat.
    • Breeding and selecting suitable animals.
    • Supplying balanced rations of food, including roughage and concentrates.
    • Managing disease control and vaccination.
    • Providing proper housing and hygiene.
    • Improving production with better breeds and better practices.
    • Fish farming (mariculture and aquaculture), and capture fishing, also require good management to effectively produce.

    Honey Production

    • Beekeeping is important as it provides honey.
    • Honey production depends on factors like the flowers available for bees to collect nectar (pasturage) and bee variety.
    • The Italian bee is a popular variety for honey production because of its high production capacity and lower sting potential.

    Storage Issues

    • Food storage is necessary, but significant losses can occur.
    • Storage needs proper methods for maintaining condition like temperature, cleanliness and pest control

    Sustainable Practices

    • Organic farming emphasizes reduced use of chemical substances, maximum use of organic waste, and methods to ensure sustainable use of resources.

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    Description

    Explore the importance of food resources and strategies for improving crop yield in response to the growing demands of a large population. This quiz discusses sustainable farming practices, the impact of the Green and White Revolutions, and advancements in crop variety through genetic modification. Test your knowledge on these essential topics for food security.

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