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2.Human Reproduction
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$A$ : In frog gray cresent is formed during fertilization.
$R$ : It is because the black granules move towards the point of entry of the sperm in animal half
A
Assertion and Reason both are correct and also correct explantion.
B
Assertion and Reason both are correct but not explanation of assertion.
C
Assertion is correct, but Reason is incorrect.
D
Both Assertion and Reason are incorrect.
Solution
Grey crescent is the area just opposite to the site of entry of sperm into ovum in animal half. It is formed in frog during fertilization.
Standard 12
Biology
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