Which of the following describes an example of fertilization in higher organisms?

A. Fusion of sperm and egg nuclei
B. Pollen grain landing on a sticky stigma
C. Ejaculation of the egg and pollen grain
D. Ejaculation of sperm into the female body

Correct Answer: Option D

D. Ejaculation of sperm into the female body

Explanation

Ejaculation of sperm into the vagina is an example of fertilization in mammals.