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Grey crescent is the area:

  1. A
    At the point of entry of sperm into ovum
  2. B
    Just opposite to the site of entry of sperm into ovum
  3. C
    At the animal pole
  4. D
    At the vegetal pole

Solution & Step-by-step Explanation

The grey crescent is the area just opposite to the site of entry of sperm into ovum. This area is significant in the development of the embryo. So, the correct answer is option B. Notice that the point of entry of sperm into ovum is not the grey crescent, but rather the opposite side of the ovum. Therefore, option A is incorrect. Options C and D are also incorrect because the grey crescent is not located at the animal pole or the vegetal pole.

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Grey crescent is the area:
A
At the point of entry of sperm into ovum
B
Just opposite to the site of entry of sperm into ovum
C
At the animal pole
D
At the vegetal pole

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Embryology

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