Question 1

Which of the following is a key adaptation that allowed seed plants to dominate terrestrial ecosystems?

Accepted Answer

The development of seeds and pollen grains

Question 2

What is the main evolutionary advantage of seeds over spores?

Accepted Answer

Seeds can remain dormant for years and contain stored food for the embryo

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

In gymnosperms, what structure directly protects the developing embryo?

Accepted Answer

The seed coat (derived from integuments)

Question 5

Which of the following is NOT a characteristic shared by all seed plants?

Accepted Answer

Flagellated sperm

Question 6

Why are gymnosperm seeds referred to as 'naked'?

Accepted Answer

They are not enclosed in ovaries (fruits)

Question 7

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

Accepted Answer

Ginkgophyta – only one living species, Ginkgo biloba

Question 8

What is the function of the pollen tube in seed plants?

Accepted Answer

To deliver sperm cells to the female gametophyte within the ovule

Question 9

Which of the following best explains why angiosperms are the most diverse and widespread group of plants?

Accepted Answer

They have flowers and fruits that enhance pollination and seed dispersal

Question 10

Double fertilization in angiosperms results in the formation of:

Accepted Answer

A diploid zygote and a triploid endosperm

Question 11

Which of the following is a real-world example of seed dispersal by wind?

Accepted Answer

Fireweed seeds colonizing the Mount St. Helens blast zone

Question 12

Which of the following is true about the relationship between animals and flowering plants?

Accepted Answer

Plant-pollinator interactions can increase the rate of speciation in plants

Question 13

Which of the following crops is NOT one of the six that provide 80% of human calories?

Accepted Answer

Soybean

Question 14

What is the main threat to plant diversity in tropical regions?

Accepted Answer

Habitat destruction due to deforestation

Question 15

Which of the following best describes the alternation of generations in plants?

Accepted Answer

Multicellular haploid organisms and multicellular diploid organisms

Question 16

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

Accepted Answer

Meiosis in cones → Pollination → Fertilization → Seed dispersal

Question 17

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

Accepted Answer

Monocots have parallel leaf venation

Question 18

Which of the following medicinal compounds is correctly matched with its plant source and use?

Accepted Answer

Taxol – Pacific yew – Ovarian cancer drug

Question 19

Which of the following statements about the evolution of angiosperms is supported by fossil evidence?

Accepted Answer

Angiosperms originated in the early Cretaceous period, about 140 million years ago

Question 20

Which of the following is a direct consequence of habitat destruction in tropical forests?

Accepted Answer

Loss of plant species and the animals they support

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

Study Guide - Practice Questions