Question

In oogamy, fertilization involves

• A. a small non-motile female gamete and a large motile male gamete
• B. a large non-motile female gamete and a small motile male gamete
• C. a large non-motile female gamete and a small non-motile male gamete
• D. a large motile female gamete and a small non- motile male gemete.

Answer 1

Answer: (B)

Oogamy is the common type of heterogamaous sexual reproduction in which the female gamete or egg cell is non-motile and significantly larger than the male gamete. The male gametes on the other hand are highly motile spermatozoa that competes for the fertilization of the non-motile egg. Oogamy occurs in animals but also found in some protists.