Reproduction in Animals Notes

• The process in which all living organisms produce offspring of their own type is called reproduction.
• There are two modes by which animals reproduce.
• These are: (i) Sexual reproduction, and (ii) Asexual reproduction.

• It occurs in higher plants and animals. Sex organs are involved.
• Organisms that reproduce sexually have male and female reproductive parts.
• These reproductive parts produce gametes.
• A male gamete is known as a sperm and a female gamete is known as an ovum that fuses to form a zygote.
• It is the zygote which develops into a new individual.
• This type of reproduction beginning from the fusion of male and female gametes is called sexual reproduction.

• The male reproductive organs include a pair of testes, two sperm ducts and a penis.

• Testes can produce millions of sperms at a time.
• Sperms are very small in size; each has a head, a middle piece and a tail.
• It is a motile type of cell and reaches female gamete for fusion.

Diagram of a Sperm