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Q. 7.     What are the necessary conditions for autotrophic nutrition and what are its byproducts?

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The necessary conditions for autotrophic nutrition are the following:

(i) Supply of carbon dioxide which is the raw material for this mode of nutrition.

(ii) Presence of sunlight which is the source of energy.

(iii) Presence of chlorophyll in the leaves which entraps the energy from sunlight.

(iv) Supply of water.

The byproduct of autotrophic nutrition is Oxygen. 

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