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CHAPTER 23
Study Guide
Section 1: Introduction to Plant Reproduction
In your textbook, read about vegetative reproduction.
If the statement is true, write true. If the statement is false, replace the italicized word or
phrase to make it true.
1. Vegetative reproduction is a form of sexual reproduction in which new plants grow
from parts of an existing plant.
2. New plants produced vegetatively are clones of the original plant.
3. Not all plants form seeds in their fruits, so these plants reproduce by
vegetative reproduction.
4. The figure shows a potato plant being reproduced vegetatively.
5. The process of growing a plant from a few cells of plant tissue is called rooting
stem cuttings.
In your textbook, read about alternation of generations and moss reproduction and life cycle.
Write the term that best completes each statement. Use these choices:
chemotaxis
meiosis
diploid
nonvascular
egg
sperm
gametophyte
sporophyte
6. The two phases of the plant life cycle are the
largest
stage and the
stage.
7. The cells of the sporophyte are all
.
8. The female gamete is the
, and the male gamete is the
.
9. The sperm of
plants must have at least a film of water to reach an egg.
10. Mosses belong to one of the few plant divisions in which the gametophyte is the
phase.
11. Spores are produced by
in the capsule of the moss sporophyte.
12. Sperm produced in antheridia move toward eggs produced in archegonia in a process
called
Unit 6
.
CHAPTER 23 Reproduction in Plants 87
Study Guide, Section 1: Introduction to Plant Reproduction continued
In your textbook, read about fern reproduction and life cycle.
Match the definition in Column A with the term in Column B.
Column A
Column B
13. spore-producing structures
A. rhizome
14. a tiny, heart-shaped gametophyte structure
B. zygote
15. structures that produce flagellated sperm
C. sori
16. the first cell of the sporophyte generation
D. antheridia
17. an underground stem that supports fronds
E. prothallus
In your textbook, read about conifer reproduction and life cycle.
Write the term that best completes each statement. Use these choices:
heterosporous
megaspores
micropyle
microspores
18. A
plant produces two types of spores that
develop into male or female gametophytes.
19. Cells in the sporangia of the pollen-producing cone undergo meiosis and form
.
20. The opening of the ovule of a conifer is called a
.
21. A cell in the ovule undergoes meiosis and forms four
.
Label the diagram of structures in the conifer life cycle. Use these choices:
female cone
male cone
mature sporophyte
22.
23.
24.
88 Reproduction in Plants CHAPTER 23
Unit 6
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Date
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CHAPTER 23
Study Guide
Section 2: Flowers
In your textbook, read about flower organs and flower adaptations.
Label the diagram of a flower. Use these choices:
anther
filament
ovary
ovule
petal
sepal
stigma
1.
2.
5.
3.
6.
4.
7.
Respond to each statement.
8. Name the type of flower that has both pistils and stamens.
9. Identify the type of plants whose flowers have parts in multiples of three.
In your textbook, read about pollination mechanisms.
For each answer below, write an appropriate question.
10. Answer: They are brightly colored, have strong scents, and make a sweet liquid
called nectar.
Question:
11. Answer: A plant’s flowers pollinate themselves or other flowers on the same plant.
Question:
In your textbook, read about photoperiodism.
Use each of the terms below only once to complete the passage.
day-neutral
intermediate-day
long-day
short-day
Different kinds of plants can bloom at different times of the year because of photoperiodism.
A (12)
plant blooms when exposed to more than the critical
number of hours of darkness. A (13)
plant blooms when exposed
to fewer than the critical number of hours of darkness. Plants that bloom regardless of the length
of days and nights are called (14)
(15)
Unit 6
plants. Many tropical plants are
plants.
CHAPTER 23 Reproduction in Plants 89
Name
Date
Study Guide
Class
CHAPTER 23
Section 3: Flowering Plants
In your textbook, read about flowering plants.
Match the definition in Column A with the term in Column B.
Column A
Column B
1. two nuclei in the center of the cell
A. dormancy
2. process in which one sperm fertilizes the egg and the other
sperm joins with the central cell
B. double fertilization
C. endosperm
3. food-storing tissue that supports the development of the embryo
4. period of inactivity that can occur in seeds
D. germination
E. polar nuclei
5. occurs when an embryo in a seed starts to grow into a new plant
In your textbook, read about the results of reproduction.
Write the phrase that best completes each statement. Use these choices:
aggregate fruits
6.
7.
dry fruits
multiple fruits
simple fleshy fruits
are dry when they are mature. Examples include pods, nuts, and grains.
form from flowers with multiple female organs that fuse as the fruits
ripen. Examples include strawberries, raspberries, and blackberries.
8.
form from many flowers that fuse as the fruits ripen. Examples are figs,
pineapples, mulberries, and osage oranges.
9.
can contain one or more seeds. Examples are apples, peaches, and grapes.
Label the diagram showing eudicot seed germination. Use these choices:
cotyledon
embryo
first leaves
hypocotyl
radicle
10.
12.
14.
11.
13.
15.
90 Reproduction in Plants CHAPTER 23
seed coat
Unit 6