Question

12. What similarity is observed in the structures of 'A' and 'B' with respect
to their function?
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Answer 1

Answer:

their both help in respiration.

Explanation:

as respiration involve both breathing and breakdown of food i.e digestion.

Answer 2

Answer:

A - Lungs - Respiratory system.

B - Digestive system.

The similarity between A and B is that they both have some material to increase surface area.

In recent studies :

Relaxing the bowels with laxative is one of the common treating methods for lung diseases based on the theory of exterior-interior correlation between lung and large intestine.