Science- REPRODUCTION

Question 1

What is sexual reproduction?

Answer 1

The fusion of male and female gametes is called sexual reproduction. (In female body)

Question 2

There are two types of reproduction.__________&___________

Answer 2

Sexual and asexual

Question 3

What is male gametes called?

Answer 3

Sperms

Question 4

How many parts does a sperm have?

Answer 4

Sperm have three parts:
- head
- middle piece
- tail

Question 5

Name all the parts of male and female reproductive organ.

Answer 5

Female-
-oviduct
-uterus
-ovary

Male-
-sperm duct
-penis
-testis

Question 6

In which part of the female reproductive organ development of baby takes place?

Answer 6

Uterus

Question 7

What is the other name for oviducts?

Answer 7

Fallopian tube

Question 8

What is the female gamete called?

Answer 8

Ova (eggs)

Question 9

What is reproduction?

Answer 9

Fusion of male(sperm) and female (ovum) gametes

Question 10

The fertilisation which takes place inside the female body is called __________

Answer 10

Internal fertilisation

Question 11

What is the full form of IVF?

Answer 11

In-vitro fertilisation

Question 12

Babies born by IVF are called________________

Answer 12

Test-tube babies

Question 13

What is external fertilisation ?

Answer 13

The fertilisation in which fusion of male and female gametes take place outside the body is called external fertilisation

Question 14

Why do frogs lay hundreds of eggs?

Answer 14

These animals lay hindered of eggs and release million of sperms , all these eggs do not get fertilised as the gags and sperm get exposed to water movement, and and rainfall. Also, there are many people in pond which may feed on them.
Thus, production of large no. of eggs and sperms is necessary to ensure fertilisation of at least few of them.

Question 15

What are oviparous and viviparous animals?

Answer 15

Oviparous animals are those who lay eggs
Viviparous animals give birth to young ones

Question 16

Why is reproduction necessary?

Answer 16

Reproduction is necessary for the continuation of species

Question 17

What is foetus?

Answer 17

The stage of the embryo in which all the body parts can be identified is called a foetus.

Question 18

Internal fertilisation takes place in hens also. How?

Answer 18

Soon after fertilisation, the zygote divides repeatedly nd travel down the oviduct. As it travels down, many protective layers are formed around it.
The hard shell that you see in hen’s egg is one such protective layer.

After the hard shell is formed around the developing embryo, the hen finally lays the egg. The embryo takes 3 weeks to develop into a chick.

Question 19

What is metamorphosis?

Answer 19

The transformation of larva into an adult through drastic changes is called metamorphosis.

Question 20

Budding is __________ reproduction

Answer 20

Asexual

Question 21

What is binary fission?

Answer 21

The type of reproduction in which an animal reproduces is called binary fission.

Question 22

What is cloning?

Answer 22

Cloning is the production of an exact copy of a cell.

Question 23

Which part of the male reproductive organ produces sperms?

Answer 23

Testes

Question 24

The ______ produces female gametes called _____ .

Answer 24

Ovary, ova (eggs)