A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: C
Solution :
Toads have a Bidder?s organ anterior to each gonad, they atrophy in adult females but persist in males, in either sex it can develop into a new ovary. If testes are removed, the Bidder?s organs become ovaries in the male, they become functional so that there is a complete sex reversal. It shows that Bidder?s organs have an important role in sex reversal in toad.
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