Question

The advantage that internal fertilisation has over external fertilisation is that in internal fertilisation :
(a) new off-springs are exactly like the parent
(b) production of large numbers of gametes is unnecessary
(c) copulation and fusion of gametes is passive
(d) fewer individuals are produced

Answer 1

(c) production of a large number of gametes is unnecessary.

In internal fertilisation, there is no need for the production of a large number of gametes as it provides a safe environment.