Gymnosperms |
Gymnosperms are plants that have seeds but no flowers. The seeds of these plants are on cones or in cups. Most gymnosperms are evergreen. Gymnosperms include conifers, cycads and the ginkgo. |
Conifers
Conifers
like the spruce, cedar and pine tree are gymnosperms and have seeds on cones. Most coniferous trees are evergreen and are specially adapted to survive
in areas with lots of snow. Many are cone-shaped to help snow slide off
them so the branches won't break. The leaves or needles of coniferous trees
lose less water than other kinds of leaves. This also helps them survive.
There are about 600 species of conifers.
Seed in a Cup The
yew tree is a conifer that has its seed in a cup. The seed of the yew is
in a red berry-like cup called an aril. The yew has long, straight, flat needles. The seeds of the yew can be toxic. Some birds will eat the aril and leave the seed. The wood of the English yew was once used to make longbows! |
Cycads Cycads were common plants about 250 million years ago. Today there are about 150 species of cycads. They grow in the tropics and subtropics. Cycads look like palms, but they aren't. Ginkgophytes There used to be lots of these gymnosperms. Today there is only one species left, the ginkgo biloba. It is native to China, but it has been transplanted and cultivated in other areas. It is thought to be extinct in the wild. The ginkgo biloba has large fan-like leaves that fall off in the winter.
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