Question

In oogamy, fertilisation 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 gamete

Answer 1

The correct option is (b) a large non-motile female gamete and a small motile male gamete.

Explanation:

In oogamous type of sexual reproduction, the female gamete ( ovum/egg) is big, Passive while male gametes (spermatozoids) are smaller, active and motile.