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Question
Assertion :Corpus luteum degenerates in the absence of fertilization. Reason: Progesterone level decreases.
Assertion :Corpus luteum degenerates in the absence of fertilization. Reason: Progesterone level decreases.
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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
Assertion is correct as corpus luteum, a temporary endocrine structure degenerates in the absence of fertilization. If pregnancy does not occur, the corpus luteum atrophies in 12-14 days.Reason is correct as well but it is not correct explanation of assertion as progesterone level decreases. Correct reason is in female, Graafian follicle forms corpus luteum after ovulation. The cells of corpus luteum are called luteal cells. The cytoplasm of luteal cells have yellow granules called luteal cells. The cytoplasm of luteal cells have yellow granules called lutein which secrete the hormone progesterone to maintain pregnancy if fertilization takes place. In the absence of fertilization corpus luteum degenerates and forms corpus albicans. Therefore, the correct answer is option B.
Assertion is correct as corpus luteum, a temporary endocrine structure degenerates in the absence of fertilization. If pregnancy does not occur, the corpus luteum atrophies in 12-14 days.
Reason is correct as well but it is not correct explanation of assertion as progesterone level decreases. Correct reason is in female, Graafian follicle forms corpus luteum after ovulation. The cells of corpus luteum are called luteal cells. The cytoplasm of luteal cells have yellow granules called luteal cells. The cytoplasm of luteal cells have yellow granules called lutein which secrete the hormone progesterone to maintain pregnancy if fertilization takes place. In the absence of fertilization corpus luteum degenerates and forms corpus albicans.
Therefore, the correct answer is option B.
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