Download All gymnosperms produce naked seeds. Many gymnosperms have

All gymnosperms produce
naked seeds.
Many gymnosperms have
needle-like or scalelike leaves,
and deep-growing root systems.
Gymnosperms are the oldest
type of seed plants.
There are 4 types of
gymnosperms today: Cycads,
conifers, ginkgoes, and
gnetophtes.
Cycads are mainly in tropical
and subtropical areas.
Conifers are cone bearing
plants, largest most diverse
group of gymnosperms, they
keep their leaves or needles
year round.
There is only one kind of
Ginkoes left- ginko biloba.
Gnetophytes live in hot deserts
and in tropical rain forests.
Cones are reproductive
structures of gymnosperms.
Usually a plant produces both
male cone and a female cone;
some produces none.
The male cone produces pollen
grains, which contains cells that
will mature into sperm cells.
The ovules contain an ovum or
egg cell.
First pollen falls from a male
cone onto a female cone.
A sperm cell and an egg cell
join together in an ovule on the
female cone.
After fertilization occurs, the
seed develops on the scale of
a female cone.
Once pollination has
happened, the ovule closes
and seals in the pollen.
Pollination is the transfer of
pollen from a male reproductive
structure to a female
reproductive structure.
In gymnosperms, wind often
carries the pollen from the male
cone to the female cone.
All angiosperms produce
flowers and seeds that are
enclosed in fruit.
Gymnosperms are different
from angiosperms because
gymnosperms produce naked
seeds and angiosperms
produce seeds covered in fruit.
Angiosperms live almost
everywhere on Earth.
Despite their differences, all
flowers have the same function,
which is reproduction.
A flower is the reproductive
structure of an angiosperm.
Draw and label a flower, like
figure 26.
Sepals are leaflike structures
that the flower is inside when it
is a bud.
Petals are the colorful part of
the plant.
Stamen is the male
reproductive part of a flower.
Pistils are the female parts of
the flower and are found in the
center of most flowers.
The stigma is the sticky tip of
the pistil.
The style is a slender tube that
connects the stigma to the
ovary.
Ovary is the hollow structure at
the base of the flower that
which protects the seed.
Pollinators like birds, bats, and
insects are attracted to flowers
by colors, shapes, and smells.
Pollinators carry pollen from
one flower to another.
First pollen falls on a flower’s
stigma.
The sperm cell and egg cell join
together in the flower’s ovule.
The zygote develops into the
embryo part of the seed.
Fruit is a ripened ovary and
other structures that enclose
one or more seeds.
Angiosperms are divided into
two major groups: monocots
and dicots.
Monocots have only one seed
Dicots produce seeds with two
leaf, parallel veins, bundles of
seed leaves, branching veins,
vascular tissue scattered
bundles of vascular tissue
throughout the stem, and
arranged in a ring, and flower in
flowers in three parts or groups
four or five parts.
of three.
Some products made from
Some products made from
gymnosperms are paper,
angiosperms are food, clothing,
lumber, turpentine, clothes,
medicine, furniture, and rubber
rosin used by baseball pitchers,
for tires.
gymnasts, and musicians.