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Transcript of Plant Growth
To understand how plants reproduce.
Plants can reproduce in one of two ways:
The reproductive organs of the plant are found in the flower.
Asexual reproduction needs only one parent, unlike sexual reproduction, which needs two parents.
fusion of gametes and
mixing of genetic information. As a result, the offspring are genetically identical to the parent and to each other. They are
are food storage organs that later develop into the following year's plants.
Some plants produce side branches with plantlets on them. The
, Chlorophytum, does this. Other plants, such as
with plantlets on them.
involves creation of a new individual produced by the combining features or genes from
The flower structure is made up of pollen producing male part known as
, and female part called
that contains the ovary and eggs.
is the process that starts the sexual reproducing mechanism.
Pollination of a plant can happen in a number of ways:
(this is a form of
The results of sexual reproduction, are the production of seeds.
Plants need to spread their seeds as far as possible and have evolved a number of ways to do this:
Some plants will self pollinate themselves - this means that there is a fusion of sex cells, but both sex cells are from
In vegetative propagation, new plants grow from parts of the parent plant.
New plants will grow out of swollen, modified roots called
. Buds develop at the base of the stem and then grow into new plants.
Potatoes are an example of a plant that reproduces in this way.
A bulb contains an
. Leaves are attached to the stem. These leaves contain much
. At the centre of the bulb is an apical bud.
Also attached are lateral buds. The apical bud will produce leaves and a flower while the lateral buds will produce new shoots. As the plant grows and develops it will form a new bulb underground.
Daffodils are an example of plants that reproduce in this way.
You need to produce a fact sheet explaining how plants reproduce, including:
Labeled structure of flower diagram
Diagrams of pollination with explanations
Diagrams of seed dispersal with explanations
A summary of asexual and sexual reproduction
An explanation of vegetative propagation with labeled diagrams.