To be able to explain Sexual Reproduction.
To be able to differentiate the different types
To be able to explain different forms of
Sexual reproduction involves two
parents who have sex organs
which produce sex cells.
The sex cells in sexual
reproduction are called
gametes and are produced in
Male gametes are known as
sperm, and female gametes
are known as eggs.
A type of cell division that results in
half the required DNA for a new
Fertilization: The fusing of the male
and female gametes to form a zygote.
Internal fertilization: sperm are
transferred from the male directly
inside the body of the female. This is
known as copulation.
External fertilization: Eggs and sperm
are released into the surrounding water.
Occurs in many aquatic invertebrates and
Development can be external in the water, external on land, or internal.
Oviparous: lay eggs,
offspring develops in egg and
(fish, amphibians, reptiles,
all birds, insects, spiders)
birth from eggs
(some sharks and
Viviparous: live placental birth