Q.

Which of the following is not a correct statement about frogs?

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a

Sinus venosus opens into the right atrium

b

Conus arteriosus is present on the ventral side of the heart

c

Cutaneous respiration occurs during aestivation and hibernation

d

Bidder’s canal is present in female frogs helping in transfer of ova

answer is D.

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Detailed Solution

Bidder's canal is present in  kidney of male frogs and receives spermatozoa from testes through vasa efferentia. In females these canals are completely absent.

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