Question 1

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

Accepted Answer

A life cycle in which both haploid and diploid generations are multicellular.

Question 2

In mosses, which structure is responsible for producing sperm cells?

Accepted Answer

Antheridium

Question 3

Which of the following is a defining characteristic of nonvascular plants (bryophytes)?

Accepted Answer

Dominant gametophyte generation

Question 4

A botanist discovers a plant with a dominant gametophyte generation, multicellular gametangia, and no vascular tissue. To which group does this plant most likely belong?

Accepted Answer

Bryophytes

Question 5

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

Accepted Answer

Antheridium – produces sperm by mitosis

Question 6

Which process restores the diploid number of chromosomes in the plant life cycle?

Accepted Answer

Fertilization

Question 7

In the alternation of generations, what is the ploidy of the spores produced by the sporophyte?

Accepted Answer

Haploid (n)

Question 8

Which of the following is true about the evolutionary history of land plants?

Accepted Answer

Land plants evolved from ancestral green algae about 470 million years ago.

Question 9

A student observes a plant with a thallus, archegoniophores, and antheridiophores. Which group does this plant most likely belong to?

Accepted Answer

Liverworts (Hepatophyta)

Question 10

Which of the following best explains why bryophytes are typically found in moist environments?

Accepted Answer

They require water for sperm to swim to the egg during fertilization.

Question 11

Which structure in mosses supports the sporangium and elevates it for spore dispersal?

Accepted Answer

Seta

Question 12

Which of the following is NOT a member of the bryophytes?

Accepted Answer

Lycophytes

Question 13

Which term refers to the structure that produces eggs in the gametophyte generation of plants?

Accepted Answer

Archegonium

Question 14

A mutation prevents meiosis in the spore mother cell of a moss. What is the most immediate consequence?

Accepted Answer

No haploid spores will be produced.

Question 15

Which of the following correctly describes the ploidy and function of the zygote in the plant life cycle?

Accepted Answer

Diploid (2n); first cell of the sporophyte generation

Question 16

Which of the following is a real-world application of bryophytes in the environment?

Accepted Answer

Sphagnum moss is used in the formation of peat, which can be used as a fuel source.

Question 17

Which of the following equations correctly represents the process of fertilization in plants?

Accepted Answer

$$n + n \rightarrow 2n$$

Question 18

Which structure in the moss life cycle is responsible for dispersing spores?

Accepted Answer

Peristome

Question 19

Which of the following best explains why the gametophyte is the dominant generation in bryophytes?

Accepted Answer

The gametophyte is larger and longer-lived than the sporophyte.

Question 20

Which of the following is a correct sequence of events in the moss life cycle?

Accepted Answer

Sporophyte (2n) → Meiosis → Spores (n) → Gametophyte (n) → Gametes (n) → Fertilization → Zygote (2n)

Introduction to Plants and Nonvascular Plants (Bryophytes)

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