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Human Reproduction question

2023 · Q52
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Human Reproduction question

2023 · Q52

NEETBiologyHuman ReproductionMCQ+4 / −1

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

Assertion A: Endometrium is necessary for implantation of blastocyst.

Reason R: In the absence of fertilization, the corpus luteum degenerates that causes disintegration of endometrium.

In the light of the above statements, choose the correct answer from the options given below:

  1. A
    Both A and R are true but R is NOT the correct explanation of A.
  2. B
    A is true but R is false.
  3. C
    A is false but R is true.
  4. D
    Both A and R are true and R is the correct explanation of A.
View written solutionFree

Correct answer: A

Assertion A : True. The endometrium is the inner lining of the uterus and it is where the blastocyst (a very early stage of an embryo) implants and develops during pregnancy.



Reason R : True. The corpus luteum is a temporary structure in the ovaries that produces progesterone, a hormone necessary for maintaining the endometrium. If fertilization does not occur, the corpus luteum degenerates, progesterone levels drop, and the endometrium disintegrates and is shed during menstruation.



However, Reason R is not a direct explanation of Assertion A, they are two separate facts about the endometrium.



So, the correct answer is :



Option A : Both A and R are true but R is NOT the correct explanation of A.

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