Question 1

Which of the following best describes the process of alternation of generations in land plants?

Accepted Answer

A life cycle in which a multicellular diploid sporophyte alternates with a multicellular haploid gametophyte.

Question 2

Which of the following is a key adaptation that allowed plants to colonize land, and what is its primary function?

Accepted Answer

Sporopollenin; it protects spores and pollen from desiccation.

Question 3

Charophytes are significant in plant evolution because:

Accepted Answer

They are the closest living relatives (sister group) to land plants.

Question 4

Which of the following correctly matches the structure with its function in the plant life cycle?

Accepted Answer

Sporangium: produces haploid spores via meiosis.

Question 5

Which of the following statements about bryophytes is correct?

Accepted Answer

The gametophyte is the dominant generation and supports the dependent sporophyte.

Question 6

Why are non-vascular plants, such as bryophytes, generally shorter than vascular plants?

Accepted Answer

They lack vascular tissue, which limits their ability to transport water and nutrients efficiently.

Question 7

Which of the following is NOT a derived trait of land plants?

Accepted Answer

Presence of seeds

Question 8

A botanist discovers a plant with vascular tissue but no seeds. Which group does this plant most likely belong to?

Accepted Answer

Seedless vascular plants

Question 9

Which of the following best explains the adaptive advantage of leaves in vascular plants?

Accepted Answer

Leaves increase the surface area for photosynthesis, enhancing energy capture.

Question 10

In the alternation of generations, which process restores the diploid number of chromosomes?

Accepted Answer

Fertilization, when two haploid gametes fuse to form a zygote: $$n + n = 2n$$

Question 11

Which of the following is produced by the archegonia in land plants?

Accepted Answer

Egg cells

Question 12

What is the main evolutionary significance of vascular tissue in plants?

Accepted Answer

It allowed plants to grow taller and colonize a wider range of terrestrial environments.

Question 13

Which of the following best describes the function of xylem in vascular plants?

Accepted Answer

Transports water and minerals from roots to the rest of the plant.

Question 14

Which of the following is a characteristic shared by both non-vascular plants and seedless vascular plants?

Accepted Answer

They both require water for fertilization.

Question 15

Which of the following statements about apical meristems is correct?

Accepted Answer

They are regions of actively dividing cells at the tips of roots and shoots, enabling growth in length.

Question 16

Which group of seedless vascular plants is the most diverse today?

Accepted Answer

Monilophytes (ferns and their relatives)

Question 17

A plant's sporophyte produces spores by which process, and what is the ploidy of the resulting spores?

Accepted Answer

Meiosis; haploid ($$n)$$

Question 18

Which of the following best explains why peat bogs are important in the global carbon cycle?

Accepted Answer

Peat bogs store large amounts of carbon, slowing its release into the atmosphere.

Question 19

Which of the following is a correct pairing of plant structure and the group in which it is found?

Accepted Answer

Sporophyll: seedless vascular plants

Question 20

Which of the following best describes the relationship between the sporophyte and gametophyte in bryophytes?

Accepted Answer

The sporophyte is dependent on the gametophyte for nutrition and support.

Chapter 29 Plant Evolution and Diversity Study Guide

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