Liver is the largest organ as well as the largest gland of the body.

In which of the following groups of organisms, food material is broken down outside the body and absorbed?

Name any two digestive enzymes secreted in the human digestive system and write their functions.

Explain the process by which the energy requirements of autotrophic organisms are fulfilled. In which form are the unused carbohydrates stored?

Where does digestion of fat take place in our body?

Differentiate between an autotroph and a heterotroph.