REPRODUCTION IN ANIMALS CLASS 8

CLASS 8

REPRODUCTION IN ANIMALS

Q1. Answer the following :

i. Female Gamete in humans.

ii.Organism with largest egg.

iii.Part where development of the baby takes place.

iv.Name the first successfully cloned sheep.

v.Type of fertilization in hens.

vi.Example of viviparous organism.

vii.Example of an organism with internal fertilization and external growth of baby.

viii.Example of an organism with external fertilization –

Q2. Fill ups:

i. In humans __________ is the male reproductive organ and

 _____________ is the female reproductive organ.

ii. _____________ is the male gamete produced by _____________.

iii. Fertilized egg is also called _____________.

iv. The female reproductive organs include______________, ________________ and _____________.

v. The male reproductive organs include _______________, _____________ and _________________.

vi. ______________ and ___________ lays hundreds of 

eggs at a time.

vii. _____________ reproduces by budding.

viii. All living organisms ______________ to produce young 

ones like them.

ix. Organisms reproduce by two ways ______________ and _________________.

x. Tadpole is the developing stage of the _____________.

xi. The cell formed after fertilization is called _________________.

xii. Frogs undergo ____________________ to become 

adults from tadpoles.

xiii. ___________________________ is essential for the continuation of species.

xiv. ___________________________ reproduction is 

characterised by the fusion of two cells called gametes.

xv. The cells involved in sexual reproduction are called _______________.

3. Name the following :

1. Fusion of male and female cell

2. Male reproductive cell

3. Female reproductive cell

4. Cell formed by fusion of male and female gamete

5. Connection between Embryo and Uterine wall

6. A sack protecting the embryo

7. Hormone produced by testis

8. Hormone produced by Ovary which is responsible for 

secondary sexual characters

4. Give reasons for the following:- 

(a) Gender of the resulting offspring is determined by the

 male parent in humans. 

(b) Sex hormones regulate secondary sexual characters. 

(c) Platypus & Echidna lay eggs but are not oviparous animals.