Reproduction in animal - reproduction - types of reproduction - male reproduction -female reproduction -in vitro fertilisation - metamorphosis - cloning

1. REPRODUCTION IN
ANIMALS
BY MS. HARSHI GUPTA

2. TWO TYPES OF REPRODUCTION
• Asexual reproduction involves only one parent
that produces two or more genetically similar
organisms. It occurs mainly in organisms with a
simple structure.
--Binary fission Budding Fragmentation
• Sexual reproduction involves two parents. A
male sex cell joins with a female sex cell
(fertilization) and they form a new cell called a
zygote. The zygote grows into a new organism.
• Two parents of different sex are involved. • The
offspring are different from their parents and from
each other

3. Types of Asexual Reproduction
Budding
Binary Fission

4. Gonads produce sexual cells.
• The gonads in males are
the testicles.
• The gonads in females are
the ovaries.

5. Sexual cells or gametes
Ova cells, from ovaries.
Sperm cells, from the testes.

6. FERTILISATION

7. TYPES OF FERTILIZATION
• Internal fertilization • It
occurs in terrestrial animals. •
The male introduce sperm
cells in the female’s body
(copulation). • Sperm cells and
ova join inside the mother
• External fertilization • Occurs
insome animals living in water.
• The female releases a large
amount of ova. • The male
releases the sperm cells. •
Sperm cells join ova by
chance.

8. SEXUAL REPRODUCTION IN ANIMALS
• Male reproductive system
-The human male
reproductive system
consists of the following
organs: Testes, Scrotal sacs,
Epididymis, Sperm ducts,
Seminal vesicles and penis.
- Testes are the real
reproductive organs in man.
- Testes make male gametes
called sperms.

9. Cont...
• Female reproductive system
- The human female reproductive
system consists of the following
organs: Ovaries, Oviducts,Uterus
and Vagina.
- Ovaries are the real reproductive
organs in a woman.
- Ovaries make the female
gametes called eggs (or ova).

10. Where fertilisation takes place
• A sperm combines with the egg in the oviduct
and fertilises it to form a zygote.

11. Development of Embryo

12. Difference between Zygote , Embryo and Foetus

13. In Vitro Fertilisation

14. EMBRYONIC DEVELOPMENT
• Oviparous. Those animals
which lays eggsfrom which
young one are hatched later
on.
• Vivipary. The embryo
develops inside the body of
the mother.
• Ovoviviparity. The embryo
develops within eggs that
remain within the mother's
body up until they hatch

15. The case of Hen

16. METAMORPHOSIS
• An animal develops after birth or
hatching involving a big change
in the animal's form.
• Other insects, like beetles,
butterflies and flies, are very
different from their parents at birth.
• These insects pass through a
larval stage, then enter an inactive
state called pupa, or chrysalis, and
finally emerge as adults.

17. Cloning

18. Cont....

19. THANK YOU