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.

Options

A. I and II
B. I , II and III
C. II and IV
D. II , III and IV

Answer

C