Water is listed as one of the basic:

State any one difference between autotrophic and heterotrophic modes of nutrition.

Describe one way in which the small intestine is adapted for the absorption of digested food.

$(a)$ Name the extensively coiled structure of the alimentary canal.
$(b)$ Compare the length of the small intestine in herbivores and carnivores.

Apart from sunlight and chlorophyll, what other things are required for plants to synthesize food via photosynthesis?

What is the process of obtaining food by $Amoeba$ called? What does it mean?