Asexual and sexual reproduction. in plants

1. Asexual Reproduction
An overview of plants and animals

2. Asexual Reproduction In Animals
• Asexual reproduction is the formation of new
individuals from the cell(s) of a single parent
that produces offspring through repeated
mitoses of cell(s) in some part of his body.
• The offspring is genetically identical to the
parent.
• It is very common in plants; less so in
animals.
• Asexual Reproduction includes fission,
budding, regeneration, and parthenogenesis

3. Asexual Reproduction Does Not Involve The
Fusion Of Sperm And Egg.
• Budding
Produces a miniature version
of the parent that grows
directly on the body of the
adult.
Fission
Many animals are capable of
regeneration, the avility to
regrow body parts
Some species use
regeneration for true
reproduction by dividing
them in two or more parts.
Parthenogenesis
In parthenogenesis ("virgin
birth"), the females
produce eggs, but these
develop into young without
ever being fertilized.

4. Parthenogenesis Examples
• Fish.
• Aphids (Bees and Ants)
• Few species of frogs and
lizards,
• Some species of wasps
• Some species of insects

5. • Asexual Reproduction In Plants
• Asexual reproduction occurs when a portion of a plant develops into a separete new
plant that is genetically identical to the original. It os done by mitosis.
• Little genetic viariaty because genes are identical to its parents
• Have identical plants can have an advantage for cropping
• Saves time because you are growing something from a bigger size not from a seed.
• Another advantage is that saves money.

6. Asexual Reproduction Main types
Vegetative Reproduction Vegetative propagation

7. Vegetative Propagation
• To grow a new plant from a
Stem, Leaf or root.
• All plant organs have been
used for asexual reproduction,
but stems are the most
common.
• It does not include any seeds
It can be induced by men, such as Cutting,
layering, or grafting (takes expertice)

8. Cutting
• You can cut a root, a leaf or a
steam which is capable to
create a new plant.
• It grows adventitious roots.
Cutting are possible because certain types
of plants are able to sprout certain types
of roots at the cut end of their stems.
You sticke the piece of plant into the
ground and give moisture and
temperature and will have a new plant.

9. Layering
It is easy to do too by men with no
experience, is when a branch is
exposed to the soil, allow it to have
roots and then separate it from the
parent.
It have to be a node in the ground
to allow the adventitious roots to
grow.

10. Grafting
• The process to transplant
living tissues to another.
• It is used to propagate
seedless plants.
• The Scion is the one that is
going to be implanted in the
other tissue
• The stock is the one where
the Scion is going to be
inserted.

11. Vegetative Reproduction
• Underground Stolons (mints)
• Rhizomes (Cattails)
• Corms Gladiolus)
• Bulbs (Onion)
• Tubers (Potatoes)
• Runners (Strawberry)
By Stems

12. Vegetative Reproduction
By Leaves
• The leaves of the common ornamental plant
Bryophyllum (also called Kalanchoë) . Mitosis at
meristems along the leaf margins produce tiny
plantlets that fall off and can take up an
independent existence.
By Roots
• Some plants use their roots for asexual
reproduction. The dandelion is a common example.
Trees, such as the Poplar, send up new stems from
their roots. In time, an entire grove of trees may
form — all part of a clone of the original tree.