NEET Biology question

Statement 1: The zona pellucida does not disappear when the blastocyst reaches the uterus. Statement 2: The role of the zona pellucida is to prevent premature implantation of the blastocyst before it reaches the uterus.

(A)Both Statement 1 and Statement 2 are true, and Statement 2 is the correct explanation of Statement 1
(B)Both Statement 1 and Statement 2 are true, but Statement 2 is not the correct explanation of Statement 1
(C)Statement 1 is true, Statement 2 is false
(D)Statement 1 is false, Statement 2 is trueCorrect

Answer: (D)

Solution

In fact, the zona pellucida thins and the blastocyst "hatches" out of it before implantation in the uterus, so Statement 1 (that it does not disappear) is false; its

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Question ID VK-122247