Question 1

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

Accepted Answer

Formation of a cuticle to prevent water loss

Question 2

Which of the following best describes the role of land plants in the carbon cycle?

Accepted Answer

They reduce atmospheric $$CO_2$$ through photosynthesis.

Question 3

Which structure in land plants is primarily responsible for gas exchange while minimizing water loss?

Accepted Answer

Stomata

Question 4

What is the main evolutionary advantage of the alternation of generations in land plants?

Accepted Answer

It allows for both sexual and asexual reproduction, increasing genetic diversity.

Question 5

Which of the following is NOT a service provided by plants to ecosystems or humans?

Accepted Answer

Nitrogen fixation

Question 6

Which group of plants is characterized by the absence of vascular tissue and the use of spores for reproduction?

Accepted Answer

Nonvascular plants

Question 7

Why are green algae considered closely related to land plants?

Accepted Answer

They share similar chloroplast structure, thylakoid arrangements, and cell wall composition.

Question 8

Which adaptation protects plant DNA from damage caused by UV radiation?

Accepted Answer

Production of UV-absorbing compounds

Question 9

In the life cycle of land plants, which stage is diploid and produces spores by meiosis?

Accepted Answer

Sporophyte

Question 10

Which of the following best explains why seed plants are more successful in dry environments compared to non-seed plants?

Accepted Answer

Seed plants use pollen to transport sperm through the air, eliminating the need for water during fertilization.

Question 11

Which of the following is a correct pairing of plant reproductive organ and its function?

Accepted Answer

Antheridium: Sperm-producing

Question 12

Which of the following statements about the evolution of vascular tissue is correct?

Accepted Answer

Vascular tissue evolved multiple times independently in different plant lineages (convergent evolution).

Question 13

Which of the following is a direct consequence of de-vegetation in terrestrial ecosystems?

Accepted Answer

Increased soil erosion

Question 14

Which of the following best describes the difference between homospory and heterospory?

Accepted Answer

Homospory produces both male and female gametophytes from a single type of spore, while heterospory produces distinct male and female spores.

Question 15

Which of the following is a reason why biologists study green algae and land plants?

Accepted Answer

They provide essential goods and services such as food, fuel, and medicines.

Question 16

Which of the following is a function of the plant cuticle?

Accepted Answer

Prevents water loss from aboveground parts

Question 17

Which of the following best explains why the sporophyte-dominant life cycle is advantageous in land plants?

Accepted Answer

Diploid cells can respond more efficiently to environmental changes due to genetic redundancy.

Question 18

Which of the following is a real-world example of a plant-derived medicine and its use?

Accepted Answer

Taxol from Pacific yew for treating ovarian cancer

Question 19

Which of the following is a key difference between seedless vascular plants and seed plants?

Accepted Answer

Seed plants produce seeds, while seedless vascular plants reproduce via spores.

Question 20

Which of the following best describes the function of flowers in angiosperms?

Accepted Answer

They increase the probability of animal-mediated pollination.

Green Algae and Land Plants: Evolution, Diversity, and Adaptations

Study Guide - Practice Questions