Question 1

Which of the following would be considered a multiple fruit?

Accepted Answer

A)  apple 
B)  strawberry 
C)  raspberry 
D)  pineapple 
E)  corn on the cob 
A)  apple 
B)  strawberry 
C)  raspberry 
D)  pineapple 
E)  corn on the cob D

Question 2

Double fertilization means that

Accepted Answer

A)  flowers must be pollinated twice to yield fruits and seeds. 
B)  every egg must receive two sperm to produce an embryo. 
C)  one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei. 
D)  the egg of the embryo sac is diploid. 
E)  every sperm has two nuclei. 
A)  flowers must be pollinated twice to yield fruits and seeds. 
B)  every egg must receive two sperm to produce an embryo. 
C)  one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei. 
D)  the egg of the embryo sac is diploid. 
E)  every sperm has two nuclei. C

Question 3

The embryo of a grass seed is enclosed by two protective sheaths, a(n)________, which covers the young shoot, and a(n)________, which covers the young root.

Accepted Answer

A)  cotyledon; radicle 
B)  hypocotyl; epicotyl 
C)  coleoptile; coleorhiza 
D)  scutellum; coleoptile 
E)  epicotyl; radicle 
A)  cotyledon; radicle 
B)  hypocotyl; epicotyl 
C)  coleoptile; coleorhiza 
D)  scutellum; coleoptile 
E)  epicotyl; radicle C

Question 4

In which of the following pairs are the two terms equivalent?

Accepted Answer

A)  ovule-egg 
B)  embryo sac-female gametophyte 
C)  endosperm-male gametophyte 
D)  seed-zygote 
E)  microspore-pollen grain 
A)  ovule-egg 
B)  embryo sac-female gametophyte 
C)  endosperm-male gametophyte 
D)  seed-zygote 
E)  microspore-pollen grain

Question 5

Under which conditions would asexual plants have the greatest advantage over sexual plants?

Accepted Answer

A)  an environment that varies on a regular, predictable basis 
B)  an environment with irregular fluctuations of conditions 
C)  a relatively constant environment with infrequent disturbances 
D)  a fire-maintained ecosystem 
E)  an environment with many seed predators 
A)  an environment that varies on a regular, predictable basis 
B)  an environment with irregular fluctuations of conditions 
C)  a relatively constant environment with infrequent disturbances 
D)  a fire-maintained ecosystem 
E)  an environment with many seed predators

Question 6

Which of the following is the correct order of floral organs from the outside to the inside of a complete flower?

Accepted Answer

A)  petals → sepals → stamens → carpels 
B)  sepals → stamens → petals → carpels 
C)  spores → gametes → zygote → embryo 
D)  sepals → petals → stamens → carpels 
E)  male gametophyte → female gametophyte → sepals → petals 
A)  petals → sepals → stamens → carpels 
B)  sepals → stamens → petals → carpels 
C)  spores → gametes → zygote → embryo 
D)  sepals → petals → stamens → carpels 
E)  male gametophyte → female gametophyte → sepals → petals

Question 7

As a flower develops, which transition is most likely to occur?

Accepted Answer

A)  The microspores become pollen grains. 
B)  The ovule becomes a fruit. 
C)  The petals are retained. 
D)  The vegetative nucleus becomes a sperm nucleus. 
E)  The ovules become ovaries. 
A)  The microspores become pollen grains. 
B)  The ovule becomes a fruit. 
C)  The petals are retained. 
D)  The vegetative nucleus becomes a sperm nucleus. 
E)  The ovules become ovaries.

Question 8

"Golden Rice"

Accepted Answer

A)  is resistant to various herbicides, making it practical to weed rice fields with those herbicides. 
B)  is resistant to a virus that commonly attacks rice fields. 
C)  includes bacterial genes that produce a toxin that reduces damage from insect pests. 
D)  produces larger, golden grains that increase crop yields. 
E)  contains daffodil genes that increase vitamin A content. 
A)  is resistant to various herbicides, making it practical to weed rice fields with those herbicides. 
B)  is resistant to a virus that commonly attacks rice fields. 
C)  includes bacterial genes that produce a toxin that reduces damage from insect pests. 
D)  produces larger, golden grains that increase crop yields. 
E)  contains daffodil genes that increase vitamin A content.

Question 9

The most immediate potential benefits of introducing genetically modified crops include

Accepted Answer

A)  increasing the amount of land suitable for agriculture. 
B)  overcoming genetic incompatibility. 
C)  increasing the frequency of self-pollination. 
D)  increasing crop yield. 
E)  decreasing the mutation rate of certain genes. 
A)  increasing the amount of land suitable for agriculture. 
B)  overcoming genetic incompatibility. 
C)  increasing the frequency of self-pollination. 
D)  increasing crop yield. 
E)  decreasing the mutation rate of certain genes.

Question 10

The following questions refer to the diagram of an embryo sac of an angiosperm shown in Figure 38.1.
   
Figure 38.1
-Based on Figure 38.1, which cell(s)become(s)the triploid endosperm?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 11

Which of the following occurs in an angiosperm ovule?

Accepted Answer

A)  An antheridium forms from the megasporophyte. 
B)  A megaspore mother cell undergoes meiosis. 
C)  The egg nucleus is usually diploid. 
D)  A pollen tube emerges to accept pollen after pollination. 
E)  The endosperm surrounds the megaspore mother cell. 
A)  An antheridium forms from the megasporophyte. 
B)  A megaspore mother cell undergoes meiosis. 
C)  The egg nucleus is usually diploid. 
D)  A pollen tube emerges to accept pollen after pollination. 
E)  The endosperm surrounds the megaspore mother cell.

Question 12

At the conclusion of meiosis in plants, the end products are always four haploid

Accepted Answer

A)  spores. 
B)  eggs. 
C)  sperm. 
D)  seeds. 
E)  gametes. 
A)  spores. 
B)  eggs. 
C)  sperm. 
D)  seeds. 
E)  gametes.

Question 13

Which of the following is proving to be the most difficult task for plant breeders regardless of the techniques they use for crop improvement due to the complexity of the metabolic pathways involved?

Accepted Answer

A)  insect resistance 
B)  nitrogen fixation 
C)  herbicide resistance 
D)  improved nutritional quality 
E)  virus resistance 
A)  insect resistance 
B)  nitrogen fixation 
C)  herbicide resistance 
D)  improved nutritional quality 
E)  virus resistance

Question 14

Which statement concerning grafting is correct?

Accepted Answer

A)  Stocks and scions refer to twigs of different species. 
B)  Stocks come from vines, but scions come from trees. 
C)  Stocks provide root systems for grafting. 
D)  Grafting creates new species. 
E)  Stocks and scions must come from unrelated species. 
A)  Stocks and scions refer to twigs of different species. 
B)  Stocks come from vines, but scions come from trees. 
C)  Stocks provide root systems for grafting. 
D)  Grafting creates new species. 
E)  Stocks and scions must come from unrelated species.

Question 15

Garden beans and many other eudicots have a hooked hypocotyl during germination. Which of the following is true concerning hypocotyls and/or the hypocotyl hook?

Accepted Answer

A)  It is the first structure to emerge from a eudicot seed. 
B)  It pushes the cotyledons up through the soil. 
C)  It straightens when exposed to sufficient water. 
D)  It is stunted in an etiolated seedling. 
E)  It emerges after the successful establishment of the radicle. 
A)  It is the first structure to emerge from a eudicot seed. 
B)  It pushes the cotyledons up through the soil. 
C)  It straightens when exposed to sufficient water. 
D)  It is stunted in an etiolated seedling. 
E)  It emerges after the successful establishment of the radicle.

Question 16

Which of the following statements applies to the endosperm in angiosperms?

Accepted Answer

A)  Its nutrients may be absorbed by the cotyledons in the seeds of eudicots. 
B)  It develops from a haploid cell. 
C)  Its nutrients are digested before embryo development. 
D)  It develops from the fertilized egg. 
E)  It is only fully developed in monocot seeds. 
A)  Its nutrients may be absorbed by the cotyledons in the seeds of eudicots. 
B)  It develops from a haploid cell. 
C)  Its nutrients are digested before embryo development. 
D)  It develops from the fertilized egg. 
E)  It is only fully developed in monocot seeds.

Question 17

Which of the following types of plants are incapable of self-pollination?

Accepted Answer

A)  dioecious 
B)  monoecious 
C)  complete 
D)  wind-pollinated 
E)  insect-pollinated 
A)  dioecious 
B)  monoecious 
C)  complete 
D)  wind-pollinated 
E)  insect-pollinated

Question 18

Meiosis occurs within all of the following flower parts except the

Accepted Answer

A)  ovule. 
B)  style. 
C)  megasporangium. 
D)  anther. 
E)  ovary. 
A)  ovule. 
B)  style. 
C)  megasporangium. 
D)  anther. 
E)  ovary.

Question 19

The pollen produced by wind-pollinated plants is often smaller than the pollen produced by animal-pollinated plants. A reason for this might be that

Accepted Answer

A)  wind-pollinated plants, in general, are smaller than animal-pollinated plants. 
B)  wind-pollinated plants release pollen in the spring, before the plant has stored enough energy to make large pollen grains. 
C)  small pollen grains can be carried farther by the wind. 
D)  animal pollinators are more facile at picking up large pollen grains. 
E)  wind-pollinated flowers don't need large pollen grains because they don't have to attract animal pollinators. 
A)  wind-pollinated plants, in general, are smaller than animal-pollinated plants. 
B)  wind-pollinated plants release pollen in the spring, before the plant has stored enough energy to make large pollen grains. 
C)  small pollen grains can be carried farther by the wind. 
D)  animal pollinators are more facile at picking up large pollen grains. 
E)  wind-pollinated flowers don't need large pollen grains because they don't have to attract animal pollinators.

Question 20

A parent with an S₁S₂ genotype exhibiting gametophytic self-incompatibility could potentially fertilize which of the following plant genotypes of the same species with pollen grains?

Accepted Answer

A)  S₁S₃ 
B)  S₂S₃ 
C)  S₁S₄ 
D)  S₂S₄ 
E)  Half of all the pollen grains could be successful. 
A)  S₁S₃ 
B)  S₂S₃ 
C)  S₁S₄ 
D)  S₂S₄ 
E)  Half of all the pollen grains could be successful.

Exam 38: Angiosperm Reproduction and Biotechnology

Which of the following would be considered a multiple fruit?

Double fertilization means that

The embryo of a grass seed is enclosed by two protective sheaths, a(n)________, which covers the young shoot, and a(n)________, which covers the young root.

In which of the following pairs are the two terms equivalent?

Under which conditions would asexual plants have the greatest advantage over sexual plants?

Which of the following is the correct order of floral organs from the outside to the inside of a complete flower?

As a flower develops, which transition is most likely to occur?

"Golden Rice"

The most immediate potential benefits of introducing genetically modified crops include

The following questions refer to the diagram of an embryo sac of an angiosperm shown in Figure 38.1. Figure 38.1 -Based on Figure 38.1, which cell(s)become(s)the triploid endosperm?

Which of the following occurs in an angiosperm ovule?

At the conclusion of meiosis in plants, the end products are always four haploid

Which of the following is proving to be the most difficult task for plant breeders regardless of the techniques they use for crop improvement due to the complexity of the metabolic pathways involved?

Which statement concerning grafting is correct?

Garden beans and many other eudicots have a hooked hypocotyl during germination. Which of the following is true concerning hypocotyls and/or the hypocotyl hook?

Which of the following statements applies to the endosperm in angiosperms?

Which of the following types of plants are incapable of self-pollination?

Meiosis occurs within all of the following flower parts except the

The pollen produced by wind-pollinated plants is often smaller than the pollen produced by animal-pollinated plants. A reason for this might be that

A parent with an S₁S₂ genotype exhibiting gametophytic self-incompatibility could potentially fertilize which of the following plant genotypes of the same species with pollen grains?

Introduction: Themes in the Study of Life

The Chemical Context of Life

Water and Life

Carbon and the Molecular Diversity of Life

The Structure and Function of Large Biological Molecules

A Tour of the Cell

Membrane Structure and Function

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cell Communication

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

From Gene to Protein

Regulation of Gene Expression

Viruses

Biotechnology

Genomes and Their Evolution

Descent with Modification: A Darwinian View of Life

The Evolution of Populations

The Origin of Species

The History of Life on Earth

Phylogeny and the Tree of Life

Bacteria and Archaea

Protists

Plant Diversity I: How Plants Colonized Land

Plant Diversity II: The Evolution of Seed Plants

Fungi

An Overview of Animal Diversity

An Introduction to Invertebrates

The Origin and Evolution of Vertebrates

Plant Structure, Growth, and Development

Resource Acquisition and Transport in Vascular Plants

Soil and Plant Nutrition

Plant Responses to Internal and External Signals

Basic Principles of Animal Form and Function

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Osmoregulation and Excretion

Hormones and the Endocrine System

Animal Reproduction

Animal Development

Neurons, Synapses, and Signaling

Nervous Systems

Sensory and Motor Mechanisms

Animal Behavior

An Introduction to Ecology and the Biosphere

Population Ecology

Community Ecology

Ecosystems and Restoration Ecology

Conservation Biology and Global Change

Filters

The embryo of a grass seed is enclosed by two protective sheaths, a(n), which covers the young shoot, and a(n), which covers the young root.