Question 1

Which of the following best describes the process of alternation of generations in plants, as shown in the diagram?

Accepted Answer

The sporophyte (2n) produces haploid spores by meiosis, which develop into multicellular haploid gametophytes by mitosis.

Question 2

Which structure in a flowering plant is responsible for absorbing water and minerals from the soil?

Accepted Answer

Taproot

Question 3

Which of the following is a key adaptation that allowed plants to colonize land?

Accepted Answer

Presence of sporopollenin to prevent desiccation of spores

Question 4

In the structure of an idealized flower, which part is responsible for producing pollen grains?

Accepted Answer

Anther

Question 5

Which of the following cell types is primarily responsible for the transport of water and minerals in vascular plants?

Accepted Answer

Tracheids

Question 6

Which hormone is primarily responsible for cell elongation and is produced in the apical meristem of plants?

Accepted Answer

Auxin

Question 7

Which of the following best describes the function of the cuticle in terrestrial plants?

Accepted Answer

It prevents desiccation by acting as a waxy covering on stems and leaves.

Question 8

Which process allows plants to obtain positively charged mineral ions from soil particles?

Accepted Answer

Cation exchange

Question 9

Which of the following is a distinguishing feature of angiosperms compared to gymnosperms?

Accepted Answer

Formation of seeds inside a protective ovary

Question 10

Which structure in the flower is the site where pollen is received during pollination?

Accepted Answer

Stigma

Question 11

Which of the following best explains why mycorrhizae are important for plant nutrition?

Accepted Answer

They increase the surface area for water and mineral absorption.

Question 12

Which tissue type in plants is responsible for photosynthesis, storage, and support, but is neither vascular nor dermal?

Accepted Answer

Ground tissue

Question 13

Which of the following is a function of ethylene in plants?

Accepted Answer

Promotes fruit ripening and leaf abscission

Question 14

Which of the following best describes the triple response in plants?

Accepted Answer

A growth maneuver involving slowing of stem elongation, thickening of the stem, and horizontal growth in response to mechanical stress

Question 15

Which of the following is a correct sequence of events in the angiosperm life cycle?

Accepted Answer

Pollination → Fertilization → Seed formation → Germination

Question 16

Which of the following is a major difference between monocots and eudicots?

Accepted Answer

Monocots have parallel leaf venation, while eudicots have net-like venation.

Question 17

Which plant hormone is most directly involved in breaking seed dormancy and stimulating germination?

Accepted Answer

Gibberellin

Question 18

Which of the following best describes the role of phloem in plants?

Accepted Answer

Transports sugars and organic nutrients throughout the plant

Question 19

Which of the following is a real-world example of coevolution between plants and animals?

Accepted Answer

A flower evolving specific colors and scents to attract a particular pollinator species

Question 20

Which structure in the root system increases the surface area for absorption of water and minerals?

Accepted Answer

Root hairs

Plant Evolution, Structure, Nutrition, and Reproduction: Study Guide for BIOL 191A (Ch. 26–31)

Study Guide - Practice Questions