Gymnosperms: Seeds in Cones

Gymnosperms: Seeds in Cones

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What are gymnosperms?

Gymnosperms are the oldest seed-bearing plants. There are four types of gymnosperms: gnetophytes, cycads, conifers, and ginkgos. Today, we'll break down all parts of gymnosperms.

Angiosperm

A flowering plant, also called an angiosperm, is any plant that makes a flower. Close your eyes and picture a flowering plant. When we think of flowers we usually picture roses, sunflowers or other garden plants with colorful petals, but angiosperms come in all shapes and sizes, from 40 foot tall dogwood trees to 8 inch tall dandelions. No matter how big or small, angiosperms are similar because they grow flowers.

Seeds

A seed is the part of a seed plant which can grow into a new plant. It is a reproductive structure which disperses, and can survive for some time. A typical seed includes three basic parts: (1) an embryo, (2) a supply of nutrients for the embryo, and (3) a seed coat.

Gymnosperm

Gymnosperm means "naked seeds". They are called this because their seeds are open to the air with no covering such as the seeds of flowering plants. One of the major groups of gymnosperm plants is the conifer. The word "conifers" means "bearing cones." Conifers are plants that use cones to house their seeds.

Cones

Cones are the shape of gymnosperms seeds.

Needles

A very thin, pointed leaf on a fir or a pine tree.

Evergreen

A bush or tree that has green leaves throughout the year.

Multiple Choice

What does the word gymnosperm mean?

• Active seed

• Naked seed

• Coney seed

• latin seed

Multiple Choice

Which kind of plant has been around longest?

• gymnosperms

• angiosperms

• female cone

• pollinated cone

Multiple Choice

Which of these is a kind of gymnosperm plant?

Multiple Choice

Why are female cones sticky?

• to catch pollen

• to attract insects

• to hold eggs

• to stay on the branch

Multiple Choice

How do the eggs from a female cone and the pollen from a male cone come together?

• animals carry cones to one another

• scientists move pollen from plant to plant

• eggs blow from one cone to another

• wind carries the pollen from one to another cone

Multiple Choice

What is fertilization?

• pollen and an egg making a seed

• cones falling out of tree branches

• seeds growing into plants

• evergreen trees growing flowers

Multiple Choice

Where do gymnosperm seeds germinate (germinate means "to grow")?

• on the wind

• in cones

• in flowers

• in soil