Q.

Skin of frog helps in exchange of gases because

(a) it is thin

(b) it is richly supplied with blood

(c) it is kept moist by mucous and water

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a

Only (a)

b

Only (a) and (b)

c

Only (b) and (c)

d

(a), (b) and (c)

answer is D.

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Detailed Solution

Frogs exhibit cutaneous respiration. Exchange of gases occurs through skin because it is thin, moist and highly vascular structure in frogs.

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