Write the functio

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a. Nictitating membrane i.It is the third eyelid present in frogs which protects the frog from water and land environment and also helps in lubrication of the frog’s eyes

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.