A. Give the main points of difference between respiration in plants and respiration in animals.

B. Describe the exchange of gases which takes place in the leaves of a plant

(i) During daytime, and

(ii) At night.

C. What type of respiration takes place:

(i) In yeast and

(ii) In human being?

A.

B. In leafs exchange of gases takes place through small pores know as stomata. In day carbon dioxide is taken up and oxygen is given out and in night oxygen is taken up and carbon dioxide is given out.

C. In yeast anaerobic respiration takes place that is respiration in the absence of oxygen. Whereas, in humans, aerobic respiration takes place that is respiration in the presence of oxygen.