Exam 21: The Diversity of Plants

You examine a 1-inch-tall plant in the woods. This plant is part of a mass of similar small plants covering an area of several square feet. It is very flexible and does not easily stand upright by itself. Upon examining the tiny, flat, leaf-like structures of this plant, you see no veins. There is no evidence of seeds, but at the end of a little stalk on the end of the plant, there is some sort of spore-bearing structure. This plant is probably a(n):

A pine tree is a(n)________.

What is one major difference between ferns and the other seedless vascular plants?

Vessel tubes are rigid because they contain ________ in their cell walls.

The closest living relatives to plants are:

The only seedless vascular plants with broad leaves are ferns. True or False?

Land plants are believed to have evolved from ________.

Seeds allowed plants to colonize dry land. True or False?

In angiosperms, the male gametophyte is:

Roses are classified as:

During the Dust Bowl years, thousands of acres in the United States lost all vegetation due to drought and the soil blew away. Why?

In flowering plants, what is the relationship of the sporophyte generation to the gametophyte generation?

Which of the following are gymnosperms?

Which plants have been planted extensively along U.S. streets due to their resistance to pollution?

To strengthen the conducting cells and help plants stand erect without water for them to float in, land plants developed:

Which group does not depend on water for reproduction?

A fossil plant appears to have several seeds all completely enclosed in a single outer covering. This plant is probably a(n):

The cuticle of a leaf is one modification that enabled plants to move onto land. True or False?

The first cell after fertilization is a(n):

A fruit is a: