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Cells of corona radiata disperse just...

Cells of corona radiata disperse just

A

After fertilazation

B

Before implantation

C

At the time of coming in contact with sperm

D

After cleavage.

Text Solution

Verified by Experts

The correct Answer is:
B
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which of the following statements regarding fertilization and implantation are incorrect ? I. During fertilization , a sperm first comes in contact with the corona radiata cells produced by the ovum. II. Fertilization occurs only if sperm and ovum are simultaneously transported to the ampullary region. III. Implantation occurs about 7 days after fertilization . IV. The continuous division of morula leads to the formation of zygote.