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Questions and Answers
What is the mode of nutrition in which plants produce their own food?
What is the mode of nutrition in which plants produce their own food?
Which of the following is a micronutrient required by plants?
Which of the following is a micronutrient required by plants?
What is the equation for photosynthesis?
What is the equation for photosynthesis?
What is the function of xylem in plants?
What is the function of xylem in plants?
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Which of the following is an example of a nutrient deficiency in plants?
Which of the following is an example of a nutrient deficiency in plants?
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What is the role of mycorrhizal fungi in plants?
What is the role of mycorrhizal fungi in plants?
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Which of the following is a macronutrient required by plants?
Which of the following is a macronutrient required by plants?
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Where does photosynthesis occur in plant cells?
Where does photosynthesis occur in plant cells?
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Study Notes
Nutrition in Plants
Modes of Nutrition
- Autotrophic nutrition: Plants produce their own food through photosynthesis
- Heterotrophic nutrition: Plants obtain food from external sources (e.g., parasites, insectivorous plants)
Nutrients Required
- Macronutrients:
- Carbon (C)
- Hydrogen (H)
- Oxygen (O)
- Nitrogen (N)
- Phosphorus (P)
- Potassium (K)
- Micronutrients:
- Iron (Fe)
- Zinc (Zn)
- Copper (Cu)
- Manganese (Mn)
- Boron (B)
- Molybdenum (Mo)
Photosynthesis
- Process by which plants convert light energy into chemical energy
- Equation: 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
- Occurs in chloroplasts, organelles found in plant cells
Nutrient Uptake
- Roots absorb nutrients and water from soil
- Xylem transports water and minerals from roots to leaves
- Phloem transports sugars and other organic compounds produced by photosynthesis
Soil Nutrients
- Nitrogen-fixing bacteria convert atmospheric nitrogen into usable forms
- Mycorrhizal fungi aid in nutrient uptake by forming symbiotic relationships with plant roots
Nutrient Deficiencies
- Can cause a range of symptoms, including stunted growth, yellowing leaves, and reduced yields
- Examples of deficiencies:
- Nitrogen deficiency: yellowing leaves, stunted growth
- Iron deficiency: chlorosis (yellowing of leaves), reduced growth
Nutrition in Plants
Modes of Nutrition
- Plants can produce their own food through autotrophic nutrition, specifically via photosynthesis
- Heterotrophic plants, on the other hand, obtain food from external sources, such as parasites or insectivorous plants
Essential Nutrients
- Macronutrients required for plant growth include:
- Carbon, the basis of organic compounds
- Hydrogen, essential for water and organic compounds
- Oxygen, necessary for energy production
- Nitrogen, crucial for amino acids and proteins
- Phosphorus, essential for energy production and DNA
- Potassium, necessary for water balance and energy production
- Micronutrients, though required in smaller amounts, are still vital for plant growth and include:
- Iron, essential for energy production and chlorophyll
- Zinc, necessary for protein synthesis and growth regulation
- Copper, crucial for enzyme function and plant defense
- Manganese, necessary for enzyme function and photosynthesis
- Boron, essential for cell wall formation and sugar metabolism
- Molybdenum, necessary for nitrogen fixation and protein synthesis
Photosynthesis
- The process of photosynthesis converts light energy into chemical energy, producing glucose and oxygen
- The equation for photosynthesis is: 6 CO2 + 6 H2O + light energy → C6H12O6 (glucose) + 6 O2
- This process occurs in chloroplasts, organelles found in plant cells, and is essential for plant growth and energy production
Nutrient Uptake and Transport
- Roots absorb water and nutrients from the soil
- The xylem transports water and minerals from the roots to the leaves
- The phloem transports sugars and other organic compounds produced by photosynthesis throughout the plant
Soil Nutrients
- Nitrogen-fixing bacteria, such as Rhizobia, convert atmospheric nitrogen into usable forms for plants
- Mycorrhizal fungi form symbiotic relationships with plant roots, aiding in nutrient uptake
Nutrient Deficiencies
- Nutrient deficiencies can cause a range of symptoms, including stunted growth, yellowing leaves, and reduced yields
- Examples of deficiencies include:
- Nitrogen deficiency, characterized by yellowing leaves and stunted growth
- Iron deficiency, marked by chlorosis (yellowing of leaves) and reduced growth
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Description
Learn about the different modes of nutrition in plants, including autotrophic and heterotrophic nutrition, and the essential macronutrients and micronutrients required for plant growth.
