Chapter 12. 12·5–12·7 The advent of the seed opened new worlds to plants.

Show What You Know - Self Quiz

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You must read each slide, and complete any questions on the slide, in sequence.

Instructions

Check your understanding of concepts from 12·5–12·7 The advent of the seed opened new worlds to plants by answering the following questions.

1.

1. Which of the following is NOT one of the modern clades of gymnosperms?

the cycads

the ginkgo

the conifers

the gnetophytes

All of the above are modern clades of gymnosperms.

Correct. (See section 12·6 With the evolution of the seed, gymnosperms became the dominant plants on earth.)

Incorrect. (See section 12·6 With the evolution of the seed, gymnosperms became the dominant plants on earth.)

2.

2. Which of the following is characteristic of gymnosperms?

They are wind-pollinated.

The gametophyte generation is dominant.

They are more diverse than the angiosperms.

They are water-pollinated.

All of the above are correct.

Correct. (See section 12·6 With the evolution of the seed, gymnosperms became the dominant plants on earth.)

Incorrect. (See section 12·6 With the evolution of the seed, gymnosperms became the dominant plants on earth.)

3.

3. Unlike the seedless plants, seed plants:

are not dependent on water for reproduction.

have flowers and fruit.

can survive without water.

have true roots and true leaves.

produce spores.

Correct. (See section 12·5 What is a seed?)

Incorrect. (See section 12·5 What is a seed?)

4.

4. What is endosperm?

the female portion of a flowering plant

the sperm of plants

a food-storing tissue of the seed

the leaves that are part of the embryo

tissue that develops into a protective seed coat surrounding the embryo

Correct. (See section 12·5 What is a seed?)

Incorrect. (See section 12·5 What is a seed?)

5.

5. Which of the following reasons explains why conifers are the longest-lived trees?

Conifers produce seeds.

Confers have a vascular system.

Conifers have a prominent haploid generation.

Both B and C are good reasons why conifers are long-lived.

None of the above is true.

Correct. (See section 12·7 Conifers include the tallest and longest-living trees.)

Incorrect. (See section 12·7 Conifers include the tallest and longest-living trees.)

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