Question 1

Which of the following adaptations was critical for the first land plants to survive outside of aquatic environments?

Accepted Answer

Formation of sporopollenin to protect zygotes from desiccation

Question 2

The alternation of generations in land plants involves which of the following sequences?

Accepted Answer

Haploid gametophyte → mitosis → haploid gametes → fertilization → diploid sporophyte → meiosis → haploid spores

Question 3

Which evidence supports the hypothesis that charophytes are the closest living relatives of land plants?

Accepted Answer

Both share rings of cellulose-synthesizing complexes and similar flagellated sperm structure

Question 4

What is the primary function of the cuticle in land plants?

Accepted Answer

Preventing water loss and protecting against microbial attack

Question 5

Which of the following best describes the role of mycorrhizae in early land plant evolution?

Accepted Answer

They facilitated nutrient uptake for plants lacking true roots

Question 6

Fungi and animals are more closely related to each other than to plants. Which molecular evidence supports this relationship?

Accepted Answer

Both are most closely related to different groups of unicellular protists

Question 7

Which derived trait is unique to land plants and absent in charophytes?

Accepted Answer

Alternation of generations with multicellular, dependent embryos

Question 8

Why are bryophyte gametophytes typically small and close to the ground?

Accepted Answer

They lack vascular tissue for water and nutrient transport

Question 9

Which of the following statements about fungal nutrition is correct?

Accepted Answer

Fungi absorb nutrients after secreting enzymes to break down complex molecules

Question 10

A plant biologist discovers a fossil with evidence of specialized tissues for water transport, cuticles, and stomata, but no seeds. To which group does this fossil most likely belong?

Accepted Answer

Seedless vascular plants

Question 11

Which of the following best explains why the sporophyte generation became dominant in vascular plants?

Accepted Answer

Sporophytes can disperse spores more efficiently and grow taller due to vascular tissue

Question 12

Which of the following is a function of apical meristems in land plants?

Accepted Answer

Providing localized regions of cell division for growth in roots and shoots

Question 13

Which of the following is true regarding the mutualistic relationship in mycorrhizae?

Accepted Answer

The fungus improves mineral uptake for the plant, while the plant supplies organic nutrients to the fungus

Question 14

Which of the following best describes the evolutionary significance of sporopollenin?

Accepted Answer

It protected plant spores and zygotes from desiccation, facilitating colonization of land

Question 15

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

Accepted Answer

Unicellular gametophytes

Question 16

A scientist finds a fossilized plant with rhizoids, flagellated sperm, and a dominant gametophyte generation. To which group does this plant most likely belong?

Accepted Answer

Bryophytes

Question 17

Which of the following best explains why multicellularity arose separately in fungi and animals?

Accepted Answer

DNA evidence shows fungi are most closely related to nucleariids, while animals are most closely related to choanoflagellates

Question 18

Which of the following is a key difference between arbuscular (endo) mycorrhizal fungi and ectomycorrhizal fungi?

Accepted Answer

Arbuscular fungi penetrate root cell walls, while ectomycorrhizal fungi form sheaths over roots and grow into extracellular spaces

Question 19

Which of the following best explains why the surface-to-volume ratio is important for fungal mycelia?

Accepted Answer

A higher surface-to-volume ratio allows for more efficient absorption of nutrients

Chapter 26: The Colonization of Land – Evolution and Adaptations of Early Plants and Fungi

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