ANGIOSPERMS

VSGYMNOSPERMS

Miss Ma. Belén Carrillo

There are so many plants and trees that surround us.

Plants and trees not only provide us with food, fuels and many other important things but are also a source of fresh air and joy that surrounds us everyday.

There exist so many different types of plants and trees, which have tiny differences among their color, structure, as well as numerous physiological differences.

There are two important groups of plants.

ANGIOSPERMS GYMNOSPERMS

Angiosperms are flowering plants

Gymnosperms are non- flowering plants

ANGIOSPERMSAngiosperms are the largest group of plants in the plant kingdom

The name angiosperm is Greek in origin. Angeion means vessel; sperma means seed.

The seeds from these plants are formed inside containers called fruits.

250,000 species.

GYMNOSPERMSGymnosperms are plants that produce seeds in the open spaces of cones. One good example of this is pine cones

The Greek word gymno means naked, and sperma means seed.

In evolution, gymnosperms are more primitive than angiosperms.

ANGIOSPERMS

GYMNOSPERMS

This group consists of flowering ornamentals and all vegetables and edible fruits.

Gymnosperms include all of the conifers: cedar, redwood, juniper, cypress, fir, pine, and the giant sequoias

They are also the source of the world's hardwoods.

Softwoods such as pine and fir are used to make paper, lumber, and plywood.

Angiosperms have ovules that are enclosed in a carpel.

Gymnosperms do not produce flowers

A carpel consists of a stigma, a style, and an ovary.

Gymnosperms rely on the airborne transport of their pollen

The seeds of angiosperms contain either one or two cotyledons-a seed leaf

Most gymnosperms lack vessels in the xylem (wood).

Can you identify these plant types from the pictures

below?

ANGIOSPERM

GYMNOSPERM

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ANGIOSPERM

1. Class that includes plants whose seeds are not enclosed in an ovule

LET´S PRACTICE

2. Class of plants in which the mature seed is surrounded by the ovule

3- Means a "naked seed"

4. This group is often referred to as softwoods.

ANGIOSPERMS

GYMNOSPERMS

GYMNOSPERMS

GYMNOSPERMS

5. This group is often referred to as hardwoods.

6. A good example is an apple.

7. A good example is a pine tree.

ANGIOSPERMS

ANGIOSPERMS

GYMNOSPERMS

THANK YOU