Question 1

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. 
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.

Question 2

Where does meiosis occur in a flowering plant?

Accepted Answer

A)  megasporocyte 
B)  microsporocyte 
C)  pollen tube 
D)  megasporocyte and microsporocyte 
A)  megasporocyte 
B)  microsporocyte 
C)  pollen tube 
D)  megasporocyte and microsporocyte

Question 3

A flowering plant with a deleterious mutation in microsporogenesis would most likely

Accepted Answer

A)  fail to produce sepals. 
B)  fail to produce petals. 
C)  fail to produce anthers. 
D)  fail to produce pollen. 
A)  fail to produce sepals. 
B)  fail to produce petals. 
C)  fail to produce anthers. 
D)  fail to produce pollen.

Question 4

A megasporocyte in an angiosperm flower undergoes meiosis and produces four haploid megaspores. How many survive?

Accepted Answer

A)  none 
B)  one 
C)  two 
D)  three 
A)  none 
B)  one 
C)  two 
D)  three

Question 5

Several million people around the world experience malnutrition or hunger due to lack of nutritious food. Which tool would be most effective in helping alleviate human malnutrition and hunger?

Accepted Answer

A)  cloning 
B)  crop breeding 
C)  tissue culture 
D)  self-pollination 
E)  vegetative reproduction 
A)  cloning 
B)  crop breeding 
C)  tissue culture 
D)  self-pollination 
E)  vegetative reproduction

Question 6

What effects would occur in a mutant of Arabidopsis that cannot synthesize GABA within its flowers?

Accepted Answer

A)  Pollen tube growth would not be directed toward the egg, and fertilization would not occur. 
B)  The seeds from the flowers would be unable to break dormancy. 
C)  The pollen grain would not form a pollen tube due to incompatibility with the pollen tube. 
D)  The length of the style would be increased to the point where the growing pollen tube would be unable to reach the synergids. 
A)  Pollen tube growth would not be directed toward the egg, and fertilization would not occur. 
B)  The seeds from the flowers would be unable to break dormancy. 
C)  The pollen grain would not form a pollen tube due to incompatibility with the pollen tube. 
D)  The length of the style would be increased to the point where the growing pollen tube would be unable to reach the synergids.

Question 7

Which of the following in an ovule after fertilization is correctly matched?

Accepted Answer

A)  endosperm-triploid 
B)  polar nucleus-diploid 
C)  ovule integument-haploid 
D)  synergids-diploid 
E)  antipodals-diploid 
A)  endosperm-triploid 
B)  polar nucleus-diploid 
C)  ovule integument-haploid 
D)  synergids-diploid 
E)  antipodals-diploid

Question 8

What is the first step in the germination of a seed?

Accepted Answer

A)  pollination 
B)  fertilization 
C)  imbibition 
D)  hydrolysis of starch and other food reserves 
A)  pollination 
B)  fertilization 
C)  imbibition 
D)  hydrolysis of starch and other food reserves

Question 9

A small flower with green petals is most likely

Accepted Answer

A)  bee-pollinated. 
B)  bird-pollinated. 
C)  bat-pollinated. 
D)  wind-pollinated. 
A)  bee-pollinated. 
B)  bird-pollinated. 
C)  bat-pollinated. 
D)  wind-pollinated.

Question 10

Some dioecious species have the XY genotype for male and XX for female. After double fertilization, what would be the genotypes of the embryos and endosperm nuclei?

Accepted Answer

A)  embryo X/endosperm XX or embryo Y/endosperm XY 
B)  embryo XX/endosperm XX or embryo XY/endosperm XY 
C)  embryo XY/endosperm XXX or embryo XX/endosperm XXY 
D)  embryo XX/endosperm XXX or embryo XY/endosperm XXY 
A)  embryo X/endosperm XX or embryo Y/endosperm XY 
B)  embryo XX/endosperm XX or embryo XY/endosperm XY 
C)  embryo XY/endosperm XXX or embryo XX/endosperm XXY 
D)  embryo XX/endosperm XXX or embryo XY/endosperm XXY

Question 11

Which of the following is a potential advantage of introducing apomixis into hybrid crop species?

Accepted Answer

A)  Cultivars would be better able to cope with a rapidly changing environment. 
B)  They would have a larger potential genome than inbred crops. 
C)  All of the desirable traits of the cultivar would be passed on to offspring. 
D)  They would benefit from positive mutations in their DNA. 
A)  Cultivars would be better able to cope with a rapidly changing environment. 
B)  They would have a larger potential genome than inbred crops. 
C)  All of the desirable traits of the cultivar would be passed on to offspring. 
D)  They would benefit from positive mutations in their DNA.

Question 12

The black dots that cover strawberries are actually individual fruits from a flower with multiple carpels. The fleshy and tasty portion of a strawberry derives from the receptacle of the flower. Therefore, a strawberry is both

Accepted Answer

A)  a multiple fruit and an aggregate fruit. 
B)  a multiple fruit and an accessory fruit. 
C)  a simple fruit and an aggregate fruit. 
D)  an aggregate fruit and an accessory fruit. 
A)  a multiple fruit and an aggregate fruit. 
B)  a multiple fruit and an accessory fruit. 
C)  a simple fruit and an aggregate fruit. 
D)  an aggregate fruit and an accessory fruit.

Question 13

A mature, unfertilized ovule in an angiosperm is the result of

Accepted Answer

A)  a single meiotic division. 
B)  a single mitotic division. 
C)  both meiotic and mitotic divisions. 
D)  mitosis from the megaspore mother cell. 
A)  a single meiotic division. 
B)  a single mitotic division. 
C)  both meiotic and mitotic divisions. 
D)  mitosis from the megaspore mother cell.

Question 14

Which of the following pollinating agents is correctly matched with the type of plant it helps pollinate?

Accepted Answer

A)  water-terrestrial plants 
B)  animals-aquatic plants 
C)  wind-grasses 
D)  sand-desert plants 
A)  water-terrestrial plants 
B)  animals-aquatic plants 
C)  wind-grasses 
D)  sand-desert plants

Question 15

Which of the following occurs in an angiosperm ovule?

Accepted Answer

A)  An antheridium forms from the megasporophyte. 
B)  A megaspore mother cell (megasporocyte) undergoes meiosis. 
C)  The nucleus forms a diploid egg. 
D)  A pollen tube emerges to accept pollen after pollination. 
A)  An antheridium forms from the megasporophyte. 
B)  A megaspore mother cell (megasporocyte) undergoes meiosis. 
C)  The nucleus forms a diploid egg. 
D)  A pollen tube emerges to accept pollen after pollination.

Question 16

Which statement concerning grafting is correct?

Accepted Answer

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

Question 17

The primary function of the integument of an ovule is to

Accepted Answer

A)  protect against animal predation. 
B)  ensure double fertilization. 
C)  form a seed coat. 
D)  direct development of the endosperm. 
A)  protect against animal predation. 
B)  ensure double fertilization. 
C)  form a seed coat. 
D)  direct development of the endosperm.

Question 18

The embryo of a grass seed is enclosed by two protective sheaths, a ________, 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 
A)  cotyledon; radicle 
B)  hypocotyl; epicotyl 
C)  coleoptile; coleorhiza 
D)  scutellum; coleoptile

Question 19

Three mitotic divisions within the female gametophyte of a flowering plant will produce

Accepted Answer

A)  three antipodal cells, two polar nuclei, one egg, and two synergids. 
B)  the triple fusion nucleus. 
C)  three pollen grains. 
D)  two antipodal cells, two polar nuclei, two eggs, and two synergids. 
A)  three antipodal cells, two polar nuclei, one egg, and two synergids. 
B)  the triple fusion nucleus. 
C)  three pollen grains. 
D)  two antipodal cells, two polar nuclei, two eggs, and two synergids.

Question 20

Which of the following could be considered an evolutionary advantage of asexual reproduction in plants?

Accepted Answer

A)  increased success of progeny in a stable environment 
B)  increased agricultural productivity in a rapidly changing environment 
C)  maintenance and expansion of a large genome 
D)  production of numerous progeny 
A)  increased success of progeny in a stable environment 
B)  increased agricultural productivity in a rapidly changing environment 
C)  maintenance and expansion of a large genome 
D)  production of numerous progeny

Exam 30: Reproduction and Domestication of Flowering Plants

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

Where does meiosis occur in a flowering plant?

A flowering plant with a deleterious mutation in microsporogenesis would most likely

A megasporocyte in an angiosperm flower undergoes meiosis and produces four haploid megaspores. How many survive?

Several million people around the world experience malnutrition or hunger due to lack of nutritious food. Which tool would be most effective in helping alleviate human malnutrition and hunger?

What effects would occur in a mutant of Arabidopsis that cannot synthesize GABA within its flowers?

Which of the following in an ovule after fertilization is correctly matched?

What is the first step in the germination of a seed?

A small flower with green petals is most likely

Some dioecious species have the XY genotype for male and XX for female. After double fertilization, what would be the genotypes of the embryos and endosperm nuclei?

Which of the following is a potential advantage of introducing apomixis into hybrid crop species?

The black dots that cover strawberries are actually individual fruits from a flower with multiple carpels. The fleshy and tasty portion of a strawberry derives from the receptacle of the flower. Therefore, a strawberry is both

A mature, unfertilized ovule in an angiosperm is the result of

Which of the following pollinating agents is correctly matched with the type of plant it helps pollinate?

Which of the following occurs in an angiosperm ovule?

Which statement concerning grafting is correct?

The primary function of the integument of an ovule is to

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

Three mitotic divisions within the female gametophyte of a flowering plant will produce

Which of the following could be considered an evolutionary advantage of asexual reproduction in plants?

Introduction: Evolution and the Foundations of Biology

The Chemical Context of Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Transport and Cell Signaling

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Development, Stem Cells, and Cancer

Viruses

Genomes and Their Evolution

Descent With Modification

Phylogeny

The Evolution of Populations

The Origin of Species

Broad Patterns of Evolution

Early Life and the Diversification of Prokaryotes

The Origin and Diversification of Eukaryotes

The Colonization of Land by Plants and Fungi

The Rise of Animal Diversity

Plant Structure and Growth

Resource Acquisition, Nutrition, and Transport in Vascular Plants

Plant Responses to Internal and External Signals

Homeostasis and Endocrine Signaling

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Reproduction and Development

Neurons, Synapses, and Signaling

Nervous and Sensory Systems

Motor Mechanisms and Behavior

Population Ecology and the Distribution of Organisms

Species Interactions

Ecosystems and Energy

Global Ecology and Conservation Biology

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