What are the necessary conditions for autotrophic nutrition and what are its by-products?
Autotrophic nutrition requires:
(a) Carbon dioxide and water: Plants take these from the air and soil.
(b) Chlorophyll: This green pigment in plant leaves captures sunlight.
(c) Sunlight: Provides the energy needed for photosynthesis. By-products of this process are glucose (food for the plant) and oxygen (released into the air).
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