PPT: Reproduction in Animals - Science Class 8 PDF Download

 Page 1


Reproduction in Animals
Page 2


Reproduction in Animals
Reproduction is the Biological
process by which living
organisms produce new
individuals of the same kind. 
R e p r o d u c t i o n
Page 3


Reproduction in Animals
Reproduction is the Biological
process by which living
organisms produce new
individuals of the same kind. 
R e p r o d u c t i o n
Modes of Reproduction
Asexual Sexual
Involves 1 parent Involves 2 parents
gametes are not produced gametes are produced
Offsprings are same Offsprings have variation
Page 4


Reproduction in Animals
Reproduction is the Biological
process by which living
organisms produce new
individuals of the same kind. 
R e p r o d u c t i o n
Modes of Reproduction
Asexual Sexual
Involves 1 parent Involves 2 parents
gametes are not produced gametes are produced
Offsprings are same Offsprings have variation
Animals have specific reproductive
organs. Males have testes, which
produce sperm, and females have
ovaries, which produce eggs.
Similar to plants, these parts
produce tiny cells called gametes.
When male and female gametes
come together, they form a zygote.
The zygote grows into a new
individual. 
S e x u a l
R e p r o d u c t i o n
Page 5


Reproduction in Animals
Reproduction is the Biological
process by which living
organisms produce new
individuals of the same kind. 
R e p r o d u c t i o n
Modes of Reproduction
Asexual Sexual
Involves 1 parent Involves 2 parents
gametes are not produced gametes are produced
Offsprings are same Offsprings have variation
Animals have specific reproductive
organs. Males have testes, which
produce sperm, and females have
ovaries, which produce eggs.
Similar to plants, these parts
produce tiny cells called gametes.
When male and female gametes
come together, they form a zygote.
The zygote grows into a new
individual. 
S e x u a l
R e p r o d u c t i o n
Testes
Sperm Ducts
Male Reproductive Organs
Produces sperm and
testosterone—male sex
hormones that affect
the way bodies develop
Penis
Used for both the elimination
of urine from the body and the
delivery of sperm for sexual
reproduction
Carries sperm from the
testes to the urethra
during ejaculation