reproduction

Question 1

what reproduction. explain the types of it

Answer 1

production of a new individual is called reproduction. there are 2 types
1. Asexual - production of new individual by single parent without use of gametes.
1. Sexual - production of new individual by both parents with fusion of gametes.

Question 2

what is fertilization ?

Answer 2

the fusion of male and female gamete to form a zygote during sexual reproduction is called fertilization.

Question 3

explain the types of fertilization.

Answer 3

1.external - fertilization which occurs outside the female body. like in amphibians.
2.internal - fertilization which occurs inside the female body. like mammals.

Question 4

difference between viviparous and oviparous

Answer 4

viviparous give direct birth to young onces
oviparous lays eggs

Question 5

explain development of embryo

Answer 5

• zygote divides into hundreads of cells which forms an embryo
• when embryo developes into identical body parts it called foetus.
• after the complete development of foetus mother gives birth to the baby.

Question 6

what are test-tube babies ?

Answer 6

when the fallopin tube is blocked due to some reason. doctors collect freshly released egg and sperms and keep them together for few hours for in-vitro fertilization (IVF) then it is embbed in the mother’s womd for complete development.