ANIMAL REPRODUCTION POWERPOINT GENERAL BIOLOGY 2

2. Animals are typical mobile and
develop efficient mechanism in
moving, sensing, obtaining food, and
other methods to respond to the
environment.
Animals reproduce asexually,
sexually or both means.

3. Asexual reproduction in animals can
occur in different means.
Regeneration involves
the production and
differentiation of new
tissues to replace
missing and damaged
parts of the body.

4. Regeneration involves cellular replication by mitosis
followed by differentiation in tissues. This is highly
developed in invertebrates such as hydras,
flatworms, annelids and echinoderms.

5. Budding involves forming a new individual from an
outgrowth on the parent’s body. This is typical of
polyps and hydras.

6. Parthenogenesis is a development that involves an
activated unfertilized egg that undergoes mitosis in the
absence of cytokinesis (division of cytoplasm).

8. Two nuclei fuse together to form the diploid nucleus
together to develop as if it had been fertilized. This is
common in some species of aphids, bees, wasps and
ants.

9. Sexual Reproduction in animals form new
from the combination of haploid gametes to
form a genetically unique offspring.

10. Some animals also change sex from
male to female or vice versa. An
organism may start off as male,
converting to female (protandry) or as
female converting to male (protogyny).

11. Some clown fish can
start as a small non-
breeding male, which
will grow bigger when
the only female in the
group dies. The largest
male transforms to a
female clown fish, then
the largest non-breeding
male will become the
male breeding fish.