Question 1

Which of the following is a key innovation that allowed plants to colonize land and diversify into many habitats?

Accepted Answer

Evolution of seeds

Question 2

Which phylum contains the largest number of known plant species?

Accepted Answer

Phylum Anthophyta

Question 3

In the life cycle of bryophytes, which stage is dominant?

Accepted Answer

Gametophyte (n)

Question 4

Which of the following is NOT a function of plants in ecosystems?

Accepted Answer

Nitrogen fixation

Question 5

What is the main difference between nonvascular and vascular plants?

Accepted Answer

Vascular plants possess xylem and phloem for transport

Question 6

Which of the following plant groups is paraphyletic with respect to land plants?

Accepted Answer

Green algae

Question 7

Which structure in vascular plants is primarily responsible for water transport?

Accepted Answer

Xylem

Question 8

Why are seeds considered a major evolutionary innovation for plants?

Accepted Answer

They enable plants to reproduce without water

Question 9

Which of the following correctly matches a plant phylum with its common name?

Accepted Answer

Phylum Monilophyta – Ferns

Question 10

A botanist discovers a plant with megaphylls and sori on the underside of its leaves. To which phylum does this plant most likely belong?

Accepted Answer

Phylum Monilophyta

Question 11

Which equation best represents the alternation of generations in land plants?

Accepted Answer

$$2n \rightarrow n \rightarrow 2n$$

Question 12

Which adaptation allowed vascular plants to grow taller than nonvascular plants?

Accepted Answer

Presence of lignin in cell walls

Question 13

Which of the following is true about the gametophyte and sporophyte phases in plant evolution?

Accepted Answer

The sporophyte phase grows larger with the evolution of vascular tissue

Question 14

Which of the following is a real-world example of a plant providing medicine?

Accepted Answer

Willow bark used for aspirin

Question 15

A plant is found to have a single species in its phylum and is known for its fan-shaped leaves. Which phylum does it belong to?

Accepted Answer

Phylum Ginkgophyta

Question 16

Which of the following statements about Archaeplastida is correct?

Accepted Answer

Land plants are nested within green algae

Question 17

Which plant group is most likely to be found in moist habitats due to its reliance on water for fertilization?

Accepted Answer

Bryophytes

Question 18

Which of the following is a correct sequence for the evolution of plant groups from earliest to most recent?

Accepted Answer

Bryophytes → Seedless vascular plants → Gymnosperms → Angiosperms

Question 19

Which of the following is a defining feature of land plants but not found in their closest algal relatives?

Accepted Answer

Multicellular embryos

Question 20

A student observes a plant with microphylls and strobili. Which phylum does this plant most likely belong to?

Accepted Answer

Phylum Lycophyta

Plant Diversity I: Major Groups, Evolution, and Innovations

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