Reproduction allows organisms to produce new individuals of the same kind and ensures species survival over time. It occurs through sexual reproduction, involving the union of male and female gametes, or asexually without gametes. Sexual reproduction in animals includes internal and external fertilization and development of the zygote into an embryo and fetus before birth or hatching. Offspring then develop into adults through growth or metamorphosis. Asexual reproduction happens through budding or binary fission.

2. • What Is Reproduction?
• Importance Of Reproduction.
• Types Of Reproduction.
• Male And Female Reproduction Organs.
• Stages Of Sexual Reproduction.
• Asexual Reproduction.

3. What Is Reproduction???
Reproduction is a process by
which living things give birth to a
new generation of organisms of
the same kind.

4. Importance
Reproduction is important because
without it, a species would not
survive over time. Individuals must
reproduce to ensure that they will
continue on over generations of
time.

5. Types
• Asexual Reproduction: The reproduction in
which offspring are produced by a single
parent, without the union of sex cells, is called
asexual reproduction.
• Sexual Reproduction: The reproduction in
organisms by the union of male and female
sex cells(gametes) is called sexual
reproduction.

6. Male Reproduction Organs

7. Female Reproduction Organs

9. Stage 1: Fertilization
• The fusion of the genetic material contained in
the gametes to form a zygote is known as
fertilization.
• Zygote is the fertilized egg or ovum. It is a
single cell, thus we begin our life as a single
cell.

10. Types Of Fertilization
• Internal fertilization: Fertilization which takes
place inside the body of the female. E.g.,
Humans, Dogs, Cows, Birds, etc.
• External fertilization: Fertilization which takes
place outside the body of the female. E.g.,
Fish, Frogs, etc.

11. Stage 2: Development Of Zygote
• Zygote divides repeatedly to give rise to a ball of cells.
As it passes from the fallopian tube into the uterus it
divides further and develops into an embryo.
• When the embryo gets embedded in the wall of the
uterus it is known as implantation. The female is then
said to be pregnant or to have conceived.
• The embryo gradually develops body parts and is called
as foetus.
• When the development of the foetus is complete the
mother gives birth to a baby.

12. Stage 3: Birth Of Young Ones
• Animals which give birth to young ones
directly are called viviparous animals. The
embryo obtain nourishment from mother.
• Animals which lay eggs are called oviparous
animals. The embryo obtains nourishment
from the yolk and albumin present in the egg
itself.
• The time between fertilization and birth of
young one is called gestation period.

13. Stage 4: Young Ones To Adults
The natural process by which an animal, after
birth or hatching, undergoes abrupt changes
in its body structure until it reaches an adult
stage is called metamorphosis.

14. Metamorphosis

15. Asexual Reproduction
Budding
Binary Fission

16. Thank You
Made By:
Rahul Chawla
VIII B