Question 1

Which of the following best describes the main difference between hydroids and leptoids in nonvascular plants?

Accepted Answer

Hydroids conduct water and minerals, while leptoids conduct nutrients and sugars.

Question 2

In the life cycle of Marchantia (a liverwort), which structure is responsible for asexual reproduction, and how does it function?

Accepted Answer

The gemmae cup releases gemmae when splashed by raindrops, allowing new plants to grow.

Question 3

Which of the following statements about hornworts is TRUE?

Accepted Answer

Hornworts have true stomata on their sporophyte, unlike liverworts.

Question 4

A moss plant is observed to grow in clumps and acts like a sponge holding water. What adaptation does this provide in its natural habitat?

Accepted Answer

It maintains moisture for reproduction, as mosses require water for sperm motility.

Question 5

Which of the following is a defining feature of the gametophyte stage in the alternation of generations in nonvascular plants?

Accepted Answer

It is haploid and produces gametes by mitosis.

Question 6

Which equation best represents the alternation of generations in plants, where $$n is $$the haploid number and $$2n is $$the diploid number?

Accepted Answer

$$n \xrightarrow{fertilization} 2n \xrightarrow{meiosis} n$$

Question 7

Which of the following is NOT a characteristic of liverworts?

Accepted Answer

They have true stomata during the sporophyte generation.

Question 8

A student observes a plant with multicellular rhizoids, differentiated 'stem' and 'leaves,' and no true vascular tissue. Which group does this plant most likely belong to?

Accepted Answer

Mosses

Question 9

Which of the following best explains why bryophytes are restricted to moist habitats?

Accepted Answer

They need water for sperm motility during sexual reproduction.

Question 10

Which structure in mosses is analogous to the xylem tracheids in vascular plants?

Accepted Answer

Hydroids

Question 11

A scientist discovers a plant with a single large chloroplast per cell, a pyrenoid, and a symbiotic relationship with cyanobacteria. Which group does this plant most likely belong to?

Accepted Answer

Hornworts

Question 12

Which of the following is TRUE regarding the sexual reproduction of Marchantia?

Accepted Answer

The archegoniophore produces eggs, and the antheridiophore produces sperm.

Question 13

Which of the following is a real-world application of Sphagnum moss?

Accepted Answer

It is used in horticulture for soil conditioning and water retention.

Question 14

Which of the following best describes the function of pores in the thallus of liverworts?

Accepted Answer

They facilitate gas exchange by leading into air chambers containing photosynthetic cells.

Question 15

Which of the following is a correct sequence for the alternation of generations in nonvascular plants?

Accepted Answer

Sporophyte (2n) → meiosis → spores (n) → gametophyte (n) → mitosis → gametes (n) → fertilization → zygote (2n)

Question 16

Which of the following is a plausible consequence if a moss lacked leptoids?

Accepted Answer

It would be unable to transport nutrients and sugars efficiently.

Question 17

Which of the following best explains why bryophytes are considered 'amphibians of the plant world'?

Accepted Answer

They require moist environments for reproduction and survival.

Question 18

Which of the following is a distinguishing feature of mosses compared to liverworts?

Accepted Answer

Mosses have multicellular rhizoids, while liverworts do not.

Question 19

Which of the following is TRUE about the symbiotic relationship between hornworts and cyanobacteria?

Accepted Answer

Cyanobacteria fix nitrogen for hornworts, which is beneficial in nitrogen-poor environments.

L 8.2: Non-Vascular Plants (Bryophytes): Structure, Diversity, and Life Cycles

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