Gymnosperms

1. Gymonosperms
mean naked
seed. Seeds
produced by
gymnosperms
like this Giant
Sequoia.
Most
gymnosperms
are trees, some
are shrubs,most
have needlelike
or scalelike
leaves.

2. Gymnosperms are
the oldest type of
land plant.
Cycads are about
175 million years
old.
They look like
palm trees which
produce cones.
They grow in
tropical regions.
In Mexico the cone
is used to make
tortillas.

3. Ginkos are also a very old
gymnosperm.
They were originally from
China and Japan.
Today they are found on many
city streets because they can
tolerate pollution.

4. You probably will
never see this
gymnosperm.
This is known as a
plant.
It lives in the deserts of
the western U.S. and
Southern Africa.

5. Conifers are typical gymnosperms
you see everyday.
The oldest conifer living today is
4,900 years old.
Conifers reproduce with cones.
These are male cones and they
produce Pollen.
Female cones like the
ones on the right produce
an Ovule.
The ovule contains the
egg.
The fertilization of the
egg by the sperm
produces a zygote. This
is a result of pollination.