What are the necessary conditions for autotrophic nutrition and what are its by

7. What are the necessary conditions for autotrophic nutrition and what are its by-products?

Ans. Autotrophic nutrition takes place through the process of photosynthesis. Carbon dioxide, water, chlorophyll pigment, and sunlight are the necessary conditions required for autotrophic nutrition. Carbohydrates (food) and O2 are the by-products of photosynthesis.