Question 1

Which of the following is a key adaptation that allowed plants to colonize land and survive in terrestrial environments?

Accepted Answer

Formation of a waxy cuticle to prevent desiccation

Question 2

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

Accepted Answer

Plants alternate between multicellular haploid and multicellular diploid stages.

Question 3

Which of the following is TRUE about the cell walls of plants?

Accepted Answer

They contain cellulose, a polymer of glucose monomers.

Question 4

What is the main function of stomata in plants?

Accepted Answer

Regulating gas exchange and water loss

Question 5

Which group of plants is characterized by having a dominant gametophyte generation and lacking vascular tissue?

Accepted Answer

Mosses (Bryophytes)

Question 6

Which of the following best explains why mosses are important for soil health?

Accepted Answer

They stimulate soil bacteria, helping retain nitrogen in the soil.

Question 7

Which of the following is a difference between spores and seeds?

Accepted Answer

Spores are haploid and unicellular, while seeds are diploid and multicellular.

Question 8

Which of the following is a derived trait unique to land plants (embryophytes) and not found in their closest algal relatives?

Accepted Answer

Alternation of generations with multicellular diploid and haploid stages

Question 9

A botanist discovers a plant with the following characteristics: multicellular, dependent embryos, apical meristems, and walled spores produced in sporangia. To which group does this plant most likely belong?

Accepted Answer

Embryophytes (land plants)

Question 10

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

Accepted Answer

It strengthens cell walls, allowing plants to grow tall and resist gravity.

Question 11

Which of the following is a correct sequence of evolutionary events in plant history?

Accepted Answer

Origin of land plants → origin of vascular plants → origin of seed plants

Question 12

Which of the following is a real-world application of the alternation of generations in ferns?

Accepted Answer

Ferns require moist environments for fertilization because their sperm are flagellated and must swim to the egg.

Question 13

Which of the following best explains why vascular tissue was a significant evolutionary advantage for plants?

Accepted Answer

It enabled plants to transport water and nutrients efficiently, supporting greater height and size.

Question 14

Which of the following is a function of the apical meristem in plants?

Accepted Answer

Growth of roots and shoots by mitosis

Question 15

A scientist is studying a plant that produces both megaspores and microspores. Which type of spore production is this, and what does it indicate about the plant?

Accepted Answer

Heterosporous; the plant produces separate male and female gametophytes

Question 16

Which of the following is a correct description of the function of phloem in vascular plants?

Accepted Answer

Transports sugars and amino acids throughout the plant

Question 17

Which of the following is a real-world consequence of the presence of mosses in an ecosystem, as demonstrated by Richard Bowden’s experiment?

Accepted Answer

Mosses help retain nitrogen in the soil, reducing nitrogen loss.

Question 18

Which of the following best describes the difference between roots in vascular plants and rhizoids in bryophytes?

Accepted Answer

Rhizoids anchor the plant, while roots absorb water and nutrients and provide structural support.

Question 19

Which of the following is a characteristic of megaphyll leaves?

Accepted Answer

They have a highly branched vascular system and are more efficient at capturing light.

Plant Diversity I: How Plants Colonized Land

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