Question

• what is une role of saliva in the digestion of food?
What are the necessary conditions for autotrophic nutrition and what are its by-
products?

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Answer 1

Answer:

Explanation:

It helps in digestion of food by following Ways. Saliva contains a digestive enzyme called salivary amylase, which converts carbohydrates in to maltose sugars. ... It moistens and lubricates food which again helps in swallowing. It acts as solvent, dissolving some food particles to stimulate taste buds of the tongue

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.

Answer 2

Answer:

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Explanation:

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