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Asexual Reproduction Station 1
Budding
Budding is a form of asexual reproduction in which a new organism develops
from an outgrowth or bud due to cell division at one particular site. The new
organism remains attached as it grows, separating from the parent organism
only when it is mature.
Since the reproduction is asexual, the newly created organism is a clone and
is genetically identical to the parent organism.
Draw the diagram of Hydra Budding in your notes:
Asexual Reproduction
Station 2
Vegetative propagation
Some plants can grow new copies of themselves from parts that are divided
off. These parts grow into their own plant.
This plant has “thrown off” a runners, or mini-plants
that grow into new plants. You can cut the link
between parent and “child” and the new plant will
survive and grow. Strawberry plants grow runners
too.
Vegetative Propagation
Questions:
1. In the strawberry plant,
what is the “runner.”
2. Describe the genetic
variation between the
platelets and the main
plant body.
Artificial Asexual Reproduction
Station 3
Grafting
Grafting is a horticultural technique where tissues of plants are joined so as to
continue their growth together. The technique is most commonly used in asexual
propagation of commercially grown plants, such as fruit trees, for the horticultural
and agricultural trades. Here, a branch from one tree has been grafted onto the
trunk of another tree.
Copy the picture in your notes.
Grafting Questions:
1. How could you grow 10 types of
apple on the same tree?
2. Why is this an example of asexual
reproduction?
Asexual Reproduction
Station 4
Spores
Spores are the single-celled reproductive unit of nonflowering plants,
bacteria, fungi, and algae. Not all life forms reproduce sexually. Many, such
as fungi and bacteria, reproduce without mating at all. Instead, they produce
hardy structures known as spores that are often adapted for dispersal from
the main plant or fungus.
Spore Questions:
Did you know? In 2000, scientists
announcing that they had revived
bacteria that had lain in suspended
animation as spores for 250 million
years, encased in salt crystals deep in
the Earth.
1. How are spores adapted to survive
long periods of time and through
changing (often harsh)
environments?
2. Do you think scientists should have
revived these bacterial spores?
Spores from ancient plants that have
gone extinct? Why or why not?
Asexual Reproduction
Station 5
Regeneration
Regeneration is a specialized form of asexual reproduction; by regeneration
some organisms can replace an injured or lost part or grow into a new
organism
In your notes:
Draw ONE of the following examples of regeneration
Asexual Reproduction
Station 6
Binary Fission
Binary Fission ("division in half")
It is the most common form of reproduction in prokaryotes such as bacteria.
After replicating its genetic material, the cell divides into two nearly equal
sized daughter cells.
Copy the diagram in your notes.