Question 1

Which of the following is the strongest evidence that charophytes are the closest algal relatives of land plants?

Accepted Answer

Both have similar chloroplast DNA sequences and cellulose-synthesizing protein complexes.

Question 2

Which adaptation allowed early land plants to minimize water loss in a terrestrial environment?

Accepted Answer

Formation of cuticles on epidermal surfaces

Question 3

In the alternation of generations in mosses, which stage is dominant and what is its ploidy?

Accepted Answer

Gametophyte; haploid ($$n)$$

Question 4

Which of the following best explains why seeds were a major evolutionary innovation for plants?

Accepted Answer

Seeds provide protection, nourishment, and allow for dormancy and dispersal.

Question 5

A botanist discovers a plant with vascular tissue, no seeds, and dominant sporophyte generation. To which group does this plant most likely belong?

Accepted Answer

Lycophytes or pterophytes

Question 6

Which of the following correctly matches the plant organ with its primary function?

Accepted Answer

Root: anchorage and absorption

Question 7

Which process is unique to angiosperms and results in the formation of both a zygote and endosperm?

Accepted Answer

Double fertilization

Question 8

A plant is observed to have pollen grains and ovules, but no flowers or fruits. Which group does it most likely belong to?

Accepted Answer

Gymnosperms

Question 9

Which of the following is a key difference between gymnosperms and angiosperms?

Accepted Answer

Angiosperms produce flowers and fruits; gymnosperms do not.

Question 10

Which tissue system is responsible for the transport of water and nutrients in plants?

Accepted Answer

Vascular tissue

Question 11

A plant is exposed to strong winds and limited sunlight. Over time, its leaves become smaller and thicker. This is an example of:

Accepted Answer

Developmental plasticity

Question 12

Which of the following correctly describes the function of apical meristems?

Accepted Answer

They are responsible for primary growth, elongating roots and shoots.

Question 13

Which of the following best describes heterospory in seed plants?

Accepted Answer

Production of both megaspores (female) and microspores (male)

Question 14

Which part of a flower is responsible for receiving pollen during pollination?

Accepted Answer

Stigma

Question 15

A mutation prevents the formation of phloem in a plant. Which process would be most directly affected?

Accepted Answer

Transport of sugars from leaves to other parts

Question 16

Which of the following is true regarding the life cycle of a fern?

Accepted Answer

The sporophyte is the dominant, independent stage.

Question 17

Which structure in a seed plant contains the female gametophyte and, after fertilization, develops into a seed?

Accepted Answer

Ovule

Question 18

Which of the following is a function of ground tissue in plants?

Accepted Answer

Photosynthesis and storage

Question 19

A plant species has a life cycle in which the sporophyte produces spores by meiosis. Which equation best represents this process?

Accepted Answer

$$2n \rightarrow n$$

Question 20

Which of the following best explains why pollen is an important adaptation for seed plants?

Accepted Answer

It allows fertilization without the need for water.

Plant Diversity and Structure: Colonization, Evolution, and Development

Study Guide - Practice Questions