Write the functions in brief in column B,

a. Nictitating membrane – i. It is the third eyelid present in frogs which protects the frog from water and land environment

b. Tympanum – ii. It is present behind the eyes of a frog. It helps in transmitting soundwaves to the inner part of the ear in frogs.

c. Copulatory pad – iii. The male frogs have a copulatory pad on the forelimbs which help in holding the female tightly during mating.