Assertion :Implantation is the process of attachment of blastocyst on uterine endometrium Reason: Implantation is controlled by trophoblast and occurs by decidual cell reaction

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 B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Implantation is one of the stage of pregnancy. During this stage, the blastocyst attaches to the wall of the uterus on uterine endometrium. The developing embryo receives oxygen and nutrients from the mother from this attachement. Implantation is controlled by trophoblast and occurs by decidual cell reaction. The decidual cell reaction is serious of reactions that takes place in the endometrium of the uterus in order to prepare it for implantation of an embryo. This reaction is seen in each menstrual cycle and enhanced after implantation.
Thus, the correct answer is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.'

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