Q47 of 100 Page 161

What is the difference between viviparous animals and oviparous animals ?

Difference between viviparous animals and oviparous animals:

Viviparous animals	Oviparous animals
The animals which give birth to young ones are called viviparous animals.	The animals which lay eggs are called oviparous animals.
Examples- human, cow.	Example – Hens and frog.

Define foetus. After how many weeks of development, a human embryo is said to become a foetus ?

What is metamorphosis ? Give two examples of metamorphosis.

Which of the following are oviparous animals and which are viviparous animals ?

Frog, Human being, Sparrow, Lizard, Cow, Dog, hen, Fish, Butterfly, Cat.

Give five example each of animals which develop :

(a) inside the mother.

(b) inside eggs which the mother lays.