Question 1

Fruits

Accepted Answer

A)  can aid in the dispersal of seeds. 
B)  are formed from the ovule. 
C)  are formed from the endosperm. 
D)  are derived from the ovary wall. 
E)  Both a and d 
A)  can aid in the dispersal of seeds. 
B)  are formed from the ovule. 
C)  are formed from the endosperm. 
D)  are derived from the ovary wall. 
E)  Both a and d E

Question 2

What is the fate of the seven cells of the embryo sac?

Accepted Answer

A)  All but one disintegrates upon fertilization. 
B)  Two become fertilized; the others disintegrate. 
C)  Two become fertilized; the others fuse to form endosperm. 
D)  All are involved in nuclear fusion events. 
E)  They all become part of the seed tissue. 
A)  All but one disintegrates upon fertilization. 
B)  Two become fertilized; the others disintegrate. 
C)  Two become fertilized; the others fuse to form endosperm. 
D)  All are involved in nuclear fusion events. 
E)  They all become part of the seed tissue. B

Question 3

Which statement about double fertilization is not true?

Accepted Answer

A)  It is found in most angiosperms. 
B)  It takes place in the microsporangium. 
C)  One of its products is a triploid nucleus. 
D)  One sperm nucleus fuses with the egg nucleus. 
E)  One sperm nucleus fuses with two polar nuclei. 
A)  It is found in most angiosperms. 
B)  It takes place in the microsporangium. 
C)  One of its products is a triploid nucleus. 
D)  One sperm nucleus fuses with the egg nucleus. 
E)  One sperm nucleus fuses with two polar nuclei. B

Question 4

The male gametophyte of angiosperms

Accepted Answer

A)  usually requires water for fertilization. 
B)  is the pollen grain. 
C)  attaches to the ovule prior to fertilization. 
D)  can germinate on its own to form new plants. 
E)  is the macrogametophyte. 
A)  usually requires water for fertilization. 
B)  is the pollen grain. 
C)  attaches to the ovule prior to fertilization. 
D)  can germinate on its own to form new plants. 
E)  is the macrogametophyte.

Question 5

Experiments on the effect of light cues on flowering have shown that the significant cue that is sensed or measured by plants is _______.

Accepted Answer

The answer of Experiments on the effect of light cues...

Question 6

Which one of the following plant structures does not participate in asexual reproduction of plants?

Accepted Answer

A)  Flowers 
B)  Stolons 
C)  Rhizomes 
D)  Suckers 
E)  Tubers 
A)  Flowers 
B)  Stolons 
C)  Rhizomes 
D)  Suckers 
E)  Tubers

Question 7

The hormone responsible for flowering in some plants is synthesized in the

Accepted Answer

A)  floral meristem. 
B)  vegetative apical meristem. 
C)  stems. 
D)  leaves. 
E)  roots. 
A)  floral meristem. 
B)  vegetative apical meristem. 
C)  stems. 
D)  leaves. 
E)  roots.

Question 8

Which statement about photoperiodism is not true?

Accepted Answer

A)  It is related to the biological clock. 
B)  A phytochrome plays a role in the timing process. 
C)  It is based on measurement of the length of the night. 
D)  Some plants do not flower in response to photoperiod. 
E)  It is limited to plants. 
A)  It is related to the biological clock. 
B)  A phytochrome plays a role in the timing process. 
C)  It is based on measurement of the length of the night. 
D)  Some plants do not flower in response to photoperiod. 
E)  It is limited to plants.

Question 9

In the mature embryo sac, the cells closest to where the pollen tube enters the ovule (the micropyle) are the

Accepted Answer

A)  polar nuclei. 
B)  synergids. 
C)  polar nuclei and synergids. 
D)  egg and polar nuclei. 
E)  egg and synergids. 
A)  polar nuclei. 
B)  synergids. 
C)  polar nuclei and synergids. 
D)  egg and polar nuclei. 
E)  egg and synergids.

Question 10

Which of the following does not serve to break dormancy and initiate seed germination?

Accepted Answer

A)  Scarification by abrasion 
B)  Scarification by fire 
C)  Exposure to water 
D)  Abscisic acid 
E)  Growth promoters 
A)  Scarification by abrasion 
B)  Scarification by fire 
C)  Exposure to water 
D)  Abscisic acid 
E)  Growth promoters

Question 11

You notice that a new houseplant sends out long stems with what look like "little plants" attached. You allow one of these to rest in a cup of water and note that roots form. This is an example of

Accepted Answer

A)  asexual reproduction. 
B)  apomixis. 
C)  heterospory. 
D)  parthenogenesis. 
E)  vivipary. 
A)  asexual reproduction. 
B)  apomixis. 
C)  heterospory. 
D)  parthenogenesis. 
E)  vivipary.

Question 12

When a vegetative apical meristem ceases production of leaves and axillary buds and instead produces structures such as bracts, it has become a(n)

Accepted Answer

A)  axillary meristem. 
B)  inflorescence. 
C)  inflorescence meristem. 
D)  leaf. 
E)  branch. 
A)  axillary meristem. 
B)  inflorescence. 
C)  inflorescence meristem. 
D)  leaf. 
E)  branch.

Question 13

The egg can be fertilized by

Accepted Answer

A)  one tube nucleus. 
B)  one sperm cell. 
C)  two sperm nuclei. 
D)  one generative nucleus. 
E)  two synergid nuclei. 
A)  one tube nucleus. 
B)  one sperm cell. 
C)  two sperm nuclei. 
D)  one generative nucleus. 
E)  two synergid nuclei.

Question 14

The production of flowers from floral meristems is an example of _______ growth.

Accepted Answer

The answer of The production of flowers from floral meristems...

Question 15

Flowering is stimulated when light sets off a gene cascade. Explain how this may be hormonally controlled.

Accepted Answer

Light induction begins with the leaves.

Question 16

Identify the following structures as occurring in the sporophyte or gametophyte generation.
a. Embryo sac: _______
b. Antipodal cells: _______
c. Polar nuclei: _______
d. Integument: _______
e. Receptacle: _______
f. Ovary: _______
g. Anther: _______
h. Pollen grain: _______

Accepted Answer

a. Embryo sac: gametophyte
b. Antipodal

Question 17

In angiosperms, the megagametophyte is the _______ gametophyte and is called the _______, which develops in the _______.

Accepted Answer

A)  female; ovule; megasporangium 
B)  female; embryo sac; megasporangium 
C)  female; ovary; megasporangium 
D)  male; microsporocyte; embryo sac 
E)  female; megasporocyte; embryo sac 
A)  female; ovule; megasporangium 
B)  female; embryo sac; megasporangium 
C)  female; ovary; megasporangium 
D)  male; microsporocyte; embryo sac 
E)  female; megasporocyte; embryo sac

Question 18

Most banana plants in commercial production are raised from plants grown in tissue culture. Which of the following is not always an advantage of using tissue culture methods to cultivate bananas?

Accepted Answer

A)  Some banana varieties are seedless. 
B)  Plants generated by tissue culture are more likely to be free of viruses. 
C)  The plants produced by tissue culture are clones. 
D)  The plants in culture can be readily manipulated by recombinant DNA techniques. 
E)  The plants in culture can rapidly give rise to many new plants. 
A)  Some banana varieties are seedless. 
B)  Plants generated by tissue culture are more likely to be free of viruses. 
C)  The plants produced by tissue culture are clones. 
D)  The plants in culture can be readily manipulated by recombinant DNA techniques. 
E)  The plants in culture can rapidly give rise to many new plants.

Question 19

The production of French wine grapes (Vitis vinifera) that are resistant to plant lice was accomplished by

Accepted Answer

A)  self-fertilization of resistant plants. 
B)  grafting the scion onto resistant plants' root stock. 
C)  recombinant DNA techniques using the resistance gene. 
D)  planting seeds in California, where there are no plant lice. 
E)  inserting cuttings, or slips, of the plants into California soil, where there are no plant lice. 
A)  self-fertilization of resistant plants. 
B)  grafting the scion onto resistant plants' root stock. 
C)  recombinant DNA techniques using the resistance gene. 
D)  planting seeds in California, where there are no plant lice. 
E)  inserting cuttings, or slips, of the plants into California soil, where there are no plant lice.

Question 20

In a flower, the microsporangia are found on the

Accepted Answer

A)  stamen. 
B)  style. 
C)  stigma. 
D)  ovule. 
E)  ovary. 
A)  stamen. 
B)  style. 
C)  stigma. 
D)  ovule. 
E)  ovary.

Exam 38: Reproduction in Flowering Plants

Fruits

What is the fate of the seven cells of the embryo sac?

Which statement about double fertilization is not true?

The male gametophyte of angiosperms

Experiments on the effect of light cues on flowering have shown that the significant cue that is sensed or measured by plants is _______.

Which one of the following plant structures does not participate in asexual reproduction of plants?

The hormone responsible for flowering in some plants is synthesized in the

Which statement about photoperiodism is not true?

In the mature embryo sac, the cells closest to where the pollen tube enters the ovule (the micropyle) are the

Which of the following does not serve to break dormancy and initiate seed germination?

You notice that a new houseplant sends out long stems with what look like "little plants" attached. You allow one of these to rest in a cup of water and note that roots form. This is an example of

When a vegetative apical meristem ceases production of leaves and axillary buds and instead produces structures such as bracts, it has become a(n)

The egg can be fertilized by

The production of flowers from floral meristems is an example of _______ growth.

Flowering is stimulated when light sets off a gene cascade. Explain how this may be hormonally controlled.

Identify the following structures as occurring in the sporophyte or gametophyte generation. a. Embryo sac: _______ b. Antipodal cells: _______ c. Polar nuclei: _______ d. Integument: _______ e. Receptacle: _______ f. Ovary: _______ g. Anther: _______ h. Pollen grain: _______

In angiosperms, the megagametophyte is the _______ gametophyte and is called the _______, which develops in the _______.

Most banana plants in commercial production are raised from plants grown in tissue culture. Which of the following is not always an advantage of using tissue culture methods to cultivate bananas?

The production of French wine grapes (Vitis vinifera) that are resistant to plant lice was accomplished by

In a flower, the microsporangia are found on the

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Signaling and Communication

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinent Dna and Biotechnology

Differential Gene Expression in Development

Development and Evolutionary Change

Evidence and Mechanisms of Evolution

Reconstructing and Using Phylogenies

Species and Their Formation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria and Archaea: the Prokaryotic Domains

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

Fungi: Recyclers, Pathogens, Parasites, and Plant Partners

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

The Plant Body

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Function

Musculoskeletal Systems

Gas Exchange in Animals

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen

Animal Behavior

Ecology and the Distribution of Life

Population Ecology

Species Interaction and Coevolution

Community Ecology

Ecosystems and Global Ecology

Conservation Biology

Filters

Identify the following structures as occurring in the sporophyte or gametophyte generation. a. Embryo sac: ___ b. Antipodal cells: _ c. Polar nuclei: _ d. Integument: _ e. Receptacle: _ f. Ovary: _ g. Anther: _ h. Pollen grain: ___

In angiosperms, the megagametophyte is the ___ gametophyte and is called the _, which develops in the _____.