REPRODUCTION IN ANIMALSREPRODUCTION IN ANIMALS

Reproduction is the ability of the living organisms to produce young ones similar to themselves.

There are two types or Animal reproduction :

ASEXUAL Reproduction SEXUAL Reproduction

1 Reproductive Organs Animals have reproductive organs

: they can be Male or Female;Female reproductive organs are

called ovaries Male reproductive organs are

called testicles

There are animals called hermaphrodites they have both male a female organs

1.- Production of GametesFemale reproductive organs called

ovaries, produce gametes called ovules

Male reproductive organs called testicles , produce gametes called sperm

2.- Fertilization Two types:In external fertilization , the union of

the ovules and sperm occurs outside the female reproductive organs

In internal fertilization, the union of the ovules and sperm occurs inside the female reproductive organs

There are three phases in sexual reproduction:

3.- Development of the zygote and embryo

There are two ways:1 Inside an egg ( oviparous

development) . The embryo feeds from the nutrients inside the egg. When it is complete it breaks the egg ( called Hatching)

2 Inside the female reproductive system (viviparous development). The embryo feeds from the body of the mother. When it is complete it leaves the inside of the mother , (called birth)

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