Question 1

Which of the following is a key evolutionary advantage of seeds over spores in land plants?

Accepted Answer

Seeds can remain dormant for extended periods until conditions are favorable for germination.

Question 2

In seed plants, what is the function of the pollen tube?

Accepted Answer

It delivers sperm directly to the female gametophyte within the ovule.

Question 3

Which of the following best describes heterospory in seed plants?

Accepted Answer

Production of two types of spores: megaspores (female) and microspores (male).

Question 4

Which structure in angiosperms is specialized for sexual reproduction and often attracts pollinators?

Accepted Answer

Flower

Question 5

A botanist discovers a plant with parallel leaf venation, scattered vascular tissue, and floral organs in multiples of three. According to these characteristics, this plant is most likely a:

Accepted Answer

Monocot

Question 6

Which of the following correctly matches a gymnosperm phylum with a unique characteristic?

Accepted Answer

Ginkgophyta – only one living species, Ginkgo biloba, with fan-shaped leaves

Question 7

Which of the following statements about double fertilization in angiosperms is correct?

Accepted Answer

One sperm fertilizes the egg, while the other combines with two nuclei to form the triploid endosperm.

Question 8

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

Accepted Answer

Providing energy for photosynthesis

Question 9

A plant species produces seeds that are dispersed by wind. Which of the following fruit adaptations would most likely be present?

Accepted Answer

Fruits with wings or other structures that increase surface area

Question 10

Which of the following best explains why reduced gametophytes are advantageous in seed plants?

Accepted Answer

They are protected within the tissues of the parent sporophyte, reducing environmental stress.

Question 11

Which of the following is a correct sequence of events in the life cycle of a pine (a gymnosperm)?

Accepted Answer

Meiosis in cones → formation of gametophytes → fertilization → seed development

Question 12

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

Accepted Answer

$$n + n = 2n$$ for the zygote and $$n + n + n = 3n$$ for the endosperm

Question 13

A researcher is studying a plant with the following features: two cotyledons, netlike leaf venation, vascular tissue arranged in a ring, and floral organs in multiples of four or five. To which group does this plant most likely belong?

Accepted Answer

Eudicots

Question 14

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

Accepted Answer

Flowers with bilateral symmetry evolving to match the body shape of specific pollinators

Question 15

Which of the following statements about gymnosperms is correct?

Accepted Answer

Their seeds are not enclosed in ovaries and are often found on cones.

Question 16

Which of the following best describes the relationship between megasporangia, megaspores, and ovules in seed plants?

Accepted Answer

Megasporangia produce megaspores, which develop into female gametophytes within ovules.

Question 17

Which of the following is a plausible consequence of the current rate of habitat loss for plant diversity?

Accepted Answer

Up to 50% of Earth's plant species could become extinct within the next few centuries.

Question 18

Which of the following is a correct match between a plant-derived compound and its use?

Accepted Answer

Quinine – malaria preventive

Question 19

A plant biologist is studying a seed plant that has flagellated sperm and large cones with palmlike leaves. To which gymnosperm phylum does this plant most likely belong?

Accepted Answer

Cycadophyta

Plant Diversity II: The Evolution of Seed Plants – Study Notes

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