A. What is autotrophic nutrition and heterotrophic nutrition?

B. What are the conditions necessary for autotrophic nutrition?

A.

Autotrophic nutrition: - Auto means self and trophic means nutrition that is it means self-nutrition. It is the mode of nutrition in which organism prepares their food by themselves and they do not have to depend on others to get their nutrition. Example green plants, euglena, volvox etc.

Heterotrophic nutrition: - In this type of nutrition organisms depends on other organism and different materials to get their nutrition. They cannot prepare their food on their own. There are different type of heterotrophic nutrition like some organisms depends on dead and decaying materials to get their nutrition this type of nutrition is known as saprophytic nutrition (example fungi).

B. Carbon dioxide, water, chlorophyll and sunlight are the necessary conditions for autotrophic nutrition. Without these components process of photosynthesis cannot be completed.