Question

13. Internal fertilization occurs in *
O bird, fish
O reptile,frog
O mammal, frog
O reptile,mammal​

Answer 1

Explanation:

Bird, fish is the right answer

Answer 2

Answer:

○ Reptile, Mammal.

Explanation:

● Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the female body. Internal fertilization, unlike its counterpart, external fertilization, brings more control to the female with reproduction.

● In mammals, reptiles, and certain other groups of animals, this is done by copulation, an intromittent organ being introduced into the vagina or cloaca.