Question

Ducks and frogs both being oviparous exhibit different types of
fertilisation.

Answer 1

because duck is a type of bird but frog is not a bird

Answer 2

HEY !

Hen and frog both produce eggs. However, incase of hen, the fertilisation takes place inside the body and is known as internal fertilisation while in case of frogs, the fertilisation takes place out the body known as external fertilisation.

HOPE IT HELPS YOU...