Question 1

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

Accepted Answer

The sporophyte (2n) produces haploid spores by meiosis, which develop into multicellular gametophytes (n) that produce gametes 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

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

Accepted Answer

Anther

Question 4

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

Accepted Answer

Presence of sporopollenin in spore walls

Question 5

Which tissue type in plants is primarily responsible for transporting water and minerals from roots to shoots?

Accepted Answer

Xylem

Question 6

A plant hormone that promotes cell elongation and is involved in phototropism is:

Accepted Answer

Auxin

Question 7

Which of the following best describes the function of the carpel in a flower?

Accepted Answer

It is the ovule-producing reproductive organ, consisting of stigma, style, and ovary.

Question 8

Which of the following is a mutualistic association that enhances plant nutrient uptake, especially phosphorus?

Accepted Answer

Mycorrhizae

Question 9

Which process is responsible for the movement of sugars from leaves to other parts of the plant?

Accepted Answer

Phloem transport

Question 10

Which of the following is a characteristic unique to angiosperms?

Accepted Answer

Formation of flowers and fruits

Question 11

A plant is exposed to strong winds and responds by thickening its stem. This is an example of:

Accepted Answer

Thigmomorphogenesis

Question 12

Which of the following best explains why legumes are important in agriculture?

Accepted Answer

They have root nodules containing nitrogen-fixing bacteria, enriching soil nitrogen.

Question 13

Which structure in the plant body is responsible for primary growth, allowing the plant to increase in length?

Accepted Answer

Apical meristem

Question 14

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

Accepted Answer

Pollination → Fertilization → Seed formation → Germination

Question 15

Which of the following cell types is specialized for photosynthesis in leaves?

Accepted Answer

Mesophyll

Question 16

A plant that flowers only when the night is longer than a critical length is classified as a:

Accepted Answer

Short-day plant

Question 17

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

Accepted Answer

Promotes fruit ripening and leaf abscission

Question 18

Which of the following is a function of the cuticle in terrestrial plants?

Accepted Answer

Prevents desiccation by reducing water loss

Question 19

Which process allows plants to take up positively charged mineral ions from the soil?

Accepted Answer

Cation exchange

Question 20

Which of the following is a distinguishing feature of monocots compared to eudicots?

Accepted Answer

Monocots have parallel leaf venation.

Plant Evolution, Structure, Nutrition, and Reproduction: Study Guide for BIOL 191A (Chapters 26, 28, 29, 30, 31)

Study Guide - Practice Questions