Question 1

Which of the following evolutionary innovations allowed seed plants to colonize drier habitats compared to seedless plants?

Accepted Answer

Pollination and seed formation

Question 2

What is the correct sequence of key events in land plant evolution?

Accepted Answer

Multicellularity → Invasion of land → Vascular tissue → Seed plants → Flowers

Question 3

Which of the following is a major difference between gymnosperms and angiosperms?

Accepted Answer

Angiosperms produce seeds inside fruits, while gymnosperms produce naked seeds on cones.

Question 4

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

Accepted Answer

It transports sperm to the female gametophyte for fertilization

Question 5

Which of the following best describes the process of double fertilization in angiosperms?

Accepted Answer

One sperm fertilizes the egg, and another sperm fertilizes the central cell to form endosperm

Question 6

Which equation correctly represents the ploidy of the endosperm in angiosperms after double fertilization?

Accepted Answer

$$n + n + n = 3n$$

Question 7

What is the primary advantage of seeds over spores for plant dispersal?

Accepted Answer

Seeds have multicellular coats and a store of food, allowing them to remain dormant until conditions are favorable

Question 8

Which structure in a flower is responsible for producing pollen?

Accepted Answer

Anther

Question 9

A pine tree is a mature sporophyte. Which cells in the pine cone undergo meiosis to produce spores?

Accepted Answer

Microsporocytes and megasporocytes

Question 10

Which of the following is NOT an adaptation that plants have evolved to deter herbivory?

Accepted Answer

Formation of brightly colored petals

Question 11

Which of the following statements about angiosperm phylogeny is correct?

Accepted Answer

Angiosperms are a monophyletic group

Question 12

Which of the following best explains the co-evolution of insects and flowering plants?

Accepted Answer

Flowering plants and insects developed specialized relationships that increased plant diversity

Question 13

Which of the following is true about the seed structure in gymnosperms?

Accepted Answer

The seed contains a diploid embryo, haploid food reserves, and diploid maternal seed coat

Question 14

Which plant group is the most diverse, representing about 90% of all extant plant species?

Accepted Answer

Angiosperms

Question 15

What is the role of the integument in the ovule of seed plants?

Accepted Answer

It forms the protective seed coat

Question 16

Which of the following is a real-world example of a plant adaptation for seed dispersal?

Accepted Answer

Development of winged seeds in pine cones

Question 17

Which formula correctly represents the relationship between the number of ovules and seeds in a typical angiosperm flower?

Accepted Answer

$$	ext{Number of seeds} = 	ext{Number of ovules}$$

Question 18

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

Accepted Answer

Produce pollen

Question 19

Which of the following best describes the relationship between plants and animals in nutrient cycling?

Accepted Answer

Plants fix carbon and use excess $$CO_2$$, contributing to nutrient cycling

Plant Diversity II: Seed Plants, Gymnosperms, and Angiosperms

Study Guide - Practice Questions