Cone-bearing plants

Cone-bearing plants

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Describe the

​plant in one word

​Gymnosperms are seed-bearing vascular plants, such as cycads, ginkgo, yews and conifers, in which the ovules or seeds are not enclosed in an ovary. The word "gymnosperm" comes from the Greek word gymnospermos, meaning "naked seeds". Gymnosperm seeds develop either on the surface of scale or leaf-like appendages of cones, or at the end of short stalks.

​Conifers are, most simply, plants that have cones. So yes, pine trees are conifers; we all know about pine cones!

​Coniferous trees feature two types of cones: the pollen cone and the seed cone. Some conifers have both cone types on the same tree, making it possible for the tree to pollinate itself. Cross pollination occurs when one tree produces only seed cones and therefore must be fertilized by pollen drifting to the seed cones from pollen cones located on other nearby trees

​A pollen cone is a male cone that makes pollen grains. The pollen spreads through the air.

​Pollen cones are characteristically smaller and wider than seed cones. Pollen cones tend to whither and die once the pollen within the cones has been released to fertilize the seed cones.

​The seed cone is a female cone that produces an

egg cell.

​Seed cones are commonly used to identify tree type because they remain on or beneath the tree for a longer period of time.

Multiple Choice

1. Where do the reproductive structures of most conifers develop?

• A. Cones

• B. Spore

• C. Zygote

• D. Embryo

Multiple Choice

2. What characteristics do all cone-bearing plants share?

• A. They live only in hot, dry climates.

• B. They produce naked seeds in cones.

• C. They are leaf trees.

• D. They produce spores.

Multiple Choice

3. It is a type of plant reproduced by seeds and not contained in a

flower is called ________

• A. Angiosperms

• B. Gymnosperms

• C. Ferns

• D. Mosses

Multiple Choice

4. Cone-bearing plants are called ______________.

• A. Ferns

• B. Angiosperms

• C. Conifers

• D. Mosses

Multiple Choice

5. The leaves of conifers are in the form of ___________.

• A. Needles

• B. Fronds

• C. Mycellum

• D. Mosses

Multiple Choice

6. What does the male cone of conifers reproduce?

• A. Egg cell

• B. Pollen grains

• C. Fruit

• D. Flowers

Multiple Choice

7. What does the seed cone reproduce?

• A. Flowers

• B. Fruit

• C. Pollen grains

• D. Egg cell

Multiple Choice

8. The following plants are conifers except ___________.

• A. Cypress

• B. Mahogany

• C. Liverwort

• D. Pines

Multiple Choice

9. What is formed in the outside layer of the ovule when the embryo

develops?

• A. Surus

• B. Spores

• C. fiddleheads

• D. Seed coat

Multiple Choice

9. What is formed in the outside layer of the ovule when the embryo

develops?

• A. Surus

• B. Spores

• C. fiddleheads

• D. Seed coat

Multiple Choice

10.The sticky substance that can trap the conifer pollen grains that landed

near the opening of an ovule is called __________.

• A. Pollen grains

• B. Needles

• C. Pollen drop

• D. Mycellum

Multiple Choice

9. What is formed in the outside layer of the ovule when the embryo

develops?

• A. Surus

• B. Spores

• C. fiddleheads

• D. Seed coat