Consider the following four statements (A-D) related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F):
Statements:
(A) On dry land it would die due to lack of O₂ as its mouth is forcibly kept closed for a few days
(

Question

Consider the following four statements (A-D) related to the common frog Rana tigrina, and select the correct option stating which ones are true (T) and which ones are false (F):
Statements:
(A) On dry land it would die due to lack of O₂ as its mouth is forcibly kept closed for a few days
(B) It has four-chambered heart
(C) On dry land it turns uricotelic from ureotelic
(D) Its life-history is carried out in pond water

Accepted Answer

(A) T, (B) F, (C) F, (D) T. A frog can survive for a while on land because it also breathes through its skin, so statement A is true. It has a three-chambered heart, and it remains ureotelic rather than becoming uricotelic on land; its life cycle is associated with pond water, so B and C are false and D is true.

Solution

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