Assertion :The placenta of rabbit is described as deciduous type.
Reason: After implantation, the uterine endometrium undergoes changes to become 'decidua' in Rabbit.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
According to shape and distribution of villi, placenta is classified as deciduous and non-deciduous. In the deciduous type of placenta the villi are complicated and branched. In rabbits, implantation leads to the development of numerous multinucleated cells in the endometrium giving it a branched and complicated appearance. This is the decidua. Thus the correct answer is option A.

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