Q: Which formula correctly represents the ploidy of the structures in a fertilized ovule of a gymnosperm?

$$\text{Embryo: } 2n, \text{Megasporangium: } 2n, \text{Female gametophyte: } n$$

Question 1

Which of the following is a derived characteristic unique to vascular seed-bearing plants?

Accepted Answer

Presence of ovules

Question 2

When you see a fern frond in the forest, you are looking at which stage of the plant's life cycle?

Accepted Answer

A sporophyte

Question 3

In seed plants, what does the megaspore develop into?

Accepted Answer

Female gametophyte

Question 4

Which structure in seed plants is responsible for protecting the developing embryo and providing stored food?

Accepted Answer

Seed

Question 5

What is the main evolutionary advantage of seeds compared to spores?

Accepted Answer

Seeds contain stored food and can remain dormant until conditions are favorable

Question 6

Which of the following statements about gymnosperm and angiosperm ovules is correct?

Accepted Answer

Gymnosperm ovules have one integument, while angiosperm ovules usually have two

Question 7

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

Accepted Answer

To transport sperm directly to the female gametophyte within the ovule

Question 8

Which of the following best describes heterospory in seed plants?

Accepted Answer

Production of both microspores and megaspores, leading to separate male and female gametophytes

Question 9

Which of the following is NOT a phylum of gymnosperms?

Accepted Answer

Magnoliophyta

Question 10

Which adaptation is unique to angiosperms and contributes to their reproductive success?

Accepted Answer

Development of flowers and fruits

Question 11

A botanist discovers a plant with parallel leaf venation, scattered vascular tissue, and a fibrous root system. Which group does this plant most likely belong to?

Accepted Answer

Monocots

Question 12

Which of the following crops is NOT one of the six that make up 80% of human-consumed calories?

Accepted Answer

Barley

Question 13

Which process involves the transfer of pollen to the part of a seed plant containing the ovules?

Accepted Answer

Pollination

Question 14

Which of the following statements about the life cycle of seed plants is correct?

Accepted Answer

The sporophyte is dominant and the gametophyte is reduced and dependent on sporophyte tissue

Question 15

Which of the following is a correct description of the pollen grain in seed plants?

Accepted Answer

It is a haploid structure containing the male gametophyte

Question 16

Which of the following is a real-world example of the importance of seed plants to humans?

Accepted Answer

Seed plants provide food, fuel, paper, and construction materials

Question 17

Which formula correctly represents the ploidy of the structures in a fertilized ovule of a gymnosperm?

Accepted Answer

$$	ext{Embryo: } 2n, 	ext{Megasporangium: } 2n, 	ext{Female gametophyte: } n$$

Question 18

Which of the following best explains why pollen is an important adaptation for seed plants?

Accepted Answer

It allows fertilization to occur without water, enabling reproduction in dry environments

Question 19

Which of the following statements about monocots and eudicots is correct?

Accepted Answer

Eudicots have taproots and floral organs usually in multiples of four or five

Question 20

Which of the following is a correct sequence for heterosporous spore production in seed plants?

Accepted Answer

$$	ext{Megasporangium} ightarrow 	ext{Megaspore} ightarrow 	ext{Female gametophyte} ightarrow 	ext{Egg}$$

Plant Diversity II: The Evolution of Seed Plants (Chapter 30) – Study Notes

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