Choose the incorrect statement from the following

Options

A. in birds and mammals intemal ferfillisation takes place
B. colostrum contains antibodies and nutrients
C. polspermy is prevented by the chemical change in the egg suface
D. in the human female implantation occurs almost seven days after fertilisation

Answer

C

Explanation

Polyspermy describes on egg that has been fertilised by more than one sperm. During fertilisation, binding of the entry of additioal sperms. Rest all statement are correct.