Download Asexual & Sexual Reproduction

Asexual
&
Sexual
Reproduction
Asexual reproduction
is the primary form of
reproduction for
single-celled organisms
such as the
archaebacteria,
eubacteria, and protists.
Asexual Reproduction

Type of reproduction in which a
new organism is produced from
ONE parent and the offspring is
identical to the parent.

Occurs in most plants, bacteria,
protists, and low invertebrates.
Asexual Reproduction


One parent
Offspring
are identical
to the parents.
One Parent
Identical
Offspring
Asexual Reproduction

Advantages and Disadvantages of
Asexual Reproduction

Advantages – Identical to parent,
so will get all good characteristics.
 Disadvantages
– Identical
to parent, so will also get
bad characteristics
and is less able
to adapt to the
environment.
Asexual Reproduction

Types of Asexual Reproduction

Binary Fission – used by
bacteria, an organism
whose cells do not
contain a nucleus copy
then divide into two
identical organisms

Example: bacteria
Asexual Reproduction

Types of Asexual Reproduction

Regeneration – organism uses cell
division to re-grow body parts.

Example: starfish, salamander
Asexual Reproduction

Types of Asexual Reproduction

Vegetative Propagation – results in a new
plant that is genetically identical to the
parent plant (a clone).
Vegetative propagation is the ability of plants
to reproduce from existing vegetative
structures.
Some plants, such bamboo and strawberries
send out long underground stems that
produce new plants, often at considerable
distances from the original plant.
Many trees, such as the beech and
aspen, send up root sprouts and
produce colonies of new trees.
Asexual Reproduction

Types of Asexual Reproduction

Budding – organism that produces a bud
that breaks away to live on its own.

Example: hydra
Sexual Reproduction


Two parents
Two
Offspring are
Parents
a combination
of both parents
unique / diverse offspring
and are
therefore different
from each parent.
Sexual Reproduction

Advantages and Disadvantages of
Sexual Reproduction


Advantages – variety and/or diversity
of offspring (color, shape, size,
intelligence, ability, etc.), More able to
adapt to environmental changes.
Disadvantages – uniqueness,
sometimes traits needed for survival
are not passed on.
Sexual Reproduction

Types of Sexual Reproduction

Plants – when the reproductive cells
of one plant fertilize
(pollinate) the
reproductive cells
of another plant. This produces
seeds that can grow
into a new plant.
Sexual Reproduction

Types of Sexual Reproduction.

Animals – when the reproductive
cells of one
animal fertilize
the reproductive cells of another
animal. This
produces a
baby (embryo).