Biology Chapter 20 Plant Diversity

What is the main difference between plants and most green algae?

• Plants contain chlorophyll

• Plants are unicellular

• Plants are multicellular

• Plants are adapted to life in water

Why are most plants and some algae green?

• they contain chlorophyll

• they contain starch

• they contain cellulose

• they contain carbohydrates

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The first true plants were probably most similar to modern

• ferns

• mosses

• conifers

• flowering plants

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

• protective coats

• vascular systems

• pollination

• embryos

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 answer choice describes the direction in which sugars are transported by the vascular system?

• From leaves to the stem

• from the leaves to the roots

• from the leaves to the stem and roots

• from the roots to the stem and leaves

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Pollination occurs when pollen meets

• male reproductive parts of a different plant species

• male reproductive parts of the same plant species

• female reproductive parts of different plant species

• female reproductive parts of same plant species

Seed plants whose seeds are not enclosed in fruit are

• gymnosperms

• angiosperms

• ferns

• flowering plants

Fleshy fruits often play a role in seed dispersal when they are

• blown by the wind

• carried by insects

• eaten and discarded by animals

• washed away by water

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How many seed leaves do dicots have?

• 1

• 2

• 3

• 4