Question 1

Which of the following best describes the function of the anther in angiosperms?

Accepted Answer

It produces pollen grains containing male gametophytes.

Question 2

During double fertilization in angiosperms, what is the result of the fusion between a sperm cell and the two polar nuclei?

Accepted Answer

A triploid endosperm is formed.

Question 3

Which structure in the flower is directly responsible for receiving pollen during pollination?

Accepted Answer

Stigma

Question 4

A botanist observes a flower with fused petals, a single carpel, and seeds enclosed in fruit. Which group does this plant most likely belong to?

Accepted Answer

Eudicots

Question 5

Which of the following best explains the evolutionary advantage of double fertilization in angiosperms?

Accepted Answer

It ensures that the endosperm only develops if fertilization occurs, conserving resources.

Question 6

If a mutation prevents the formation of the pollen tube, which process would be directly affected?

Accepted Answer

Fertilization

Question 7

Which of the following equations correctly represents the ploidy changes during double fertilization in angiosperms?

Accepted Answer

$$n + n \rightarrow 2n ($$zygote); $$n + 2n \rightarrow 3n ($$endosperm)

Question 8

A plant breeder wants to increase cross-pollination in a crop species. Which floral adaptation would be most effective?

Accepted Answer

Producing sticky pollen that adheres to animal pollinators

Question 9

Which of the following is NOT a function of the fruit in angiosperms?

Accepted Answer

Providing nutrients to the embryo during germination

Question 10

A researcher is studying a plant with the following life cycle: sporophyte (2n) produces spores (n) by meiosis, which develop into gametophytes (n) that produce gametes (n) by mitosis. Which process restores diploidy in this cycle?

Accepted Answer

Fertilization

Question 11

Which of the following best describes the role of the micropyle in seed development?

Accepted Answer

It is the site where the pollen tube enters the ovule for fertilization.

Question 12

Which of the following scenarios would most likely result in self-incompatibility in a flowering plant?

Accepted Answer

The plant's stigma rejects pollen with matching S-alleles.

Question 13

A seed is exposed to water and oxygen at the right temperature, but fails to germinate. Which of the following is the most likely explanation?

Accepted Answer

The seed is still in a state of dormancy.

Question 14

Which of the following best explains why wind-pollinated flowers often lack bright colors and strong scents?

Accepted Answer

They do not need to attract animal pollinators.

Question 15

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

Accepted Answer

Pollination → Fertilization → Seed development → Germination

Question 16

A geneticist is studying a mutation that causes the ovule to fail to develop after fertilization. Which process will be directly affected?

Accepted Answer

Seed formation

Question 17

Which of the following best describes the relationship between pollinators and flowering plants?

Accepted Answer

Mutualism, because both benefit from the interaction.

Question 18

Which of the following is a key difference between monocot and eudicot seeds?

Accepted Answer

Monocots have one cotyledon, while eudicots have two.

Question 19

A farmer wants to prevent self-pollination in a crop to increase genetic diversity. Which method would be most effective?

Accepted Answer

Removing the anthers before the flowers open

Question 20

Which of the following best explains why some seeds require exposure to fire before they can germinate?

Accepted Answer

Fire breaks down the seed coat, allowing water and oxygen to enter.

Study Guide: Angiosperm Reproduction and Biotechnology (Chapter 38)

Study Guide - Practice Questions

Study Guide - Flashcards