Chapter 21: Plant Diversity

Green algae are part of the Kingdom Protista. What is the main difference between plants and most green algae?

• plants contain chlorophyll

• plant are all unicellular

• plants are all multicellular

• plants are adapted to life in the water

Why have plants been described as "stationary animals that eat sunlight"?

• there are no plants capable of movement

• plants and animals both make their own food

• plants and animals differ in their abilities to move and get food

• plants and naimals have no significant differences between them

Why are most plants and some algae green?

• they contain chlorophyll

• they contain starch

• they contain cellulose

• they contain carbohydrates

The green algae that were ancestors to plants could probably survive

• brief dry periods

• without chlorophyll

• in deserts

• through pollination

The first true plants were probably most similar to modern

• ferns

• mosses

• conifers

• flowering plants

Why did the first true plants need to live in watery environments?

• they were too small to retain moisture

• they needed water to carry sperm to eggs

• they had very complex vascular structures

• they needed water for buoyancy

Seed plants do not rely on standing water to reproduce. They rely on

• protective coats

• vascular systems

• pollination

• embryos

What would happen if you removed the cuticle from a plant's leaves?

• they leaves would absorb more water and grow better

• the leaves would be unable to exchange gases

• the leaves would dry out and the plant would die

• the leaves would not longer have any ligning

One group of seedless nonvascular plants often plays a key role in the earliest stages of primary succession. These are the

• liverworts

• hornworts

• mosses

• ferns

Which of the following is an example of a nonvascular plant?

• clubmosses

• ferns

• liverworts

• conifers