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Choose the incorrect statement from the ...

Choose the incorrect statement from the following

A

In birds and mammals internal fertilization takes place

B

Colostrum contains antibodies and nutrients

C

Polyspermy in mammals in prevented by the chemical changes in the egg surface

D

In the human female implantation occurs almost seven days after fertilisation

Text Solution

Verified by Experts

The correct Answer is:
C
During fertilization a sperm comes in contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperm. Thus it ensures that only one sperm can fertilise an ovum.
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