Question 1

Which of the following statements about double fertilization in angiosperms is correct?

Accepted Answer

A)  One pollen grain combines with the egg to form the zygote, and one pollen grain combines with the polar nuclei to form endosperm. 
B)  Two sperm combine with a polar nucleus to form endosperm. 
C)  Two pollen grains combine with two ovules to form the zygote and endosperm. 
D)  One sperm combines with the polar nuclei to form the zygote, and one sperm combines with the egg to form endosperm. 
E)  One sperm combines with the egg to form the zygote, and one sperm combines with the polar nuclei to form endosperm. 
A)  One pollen grain combines with the egg to form the zygote, and one pollen grain combines with the polar nuclei to form endosperm. 
B)  Two sperm combine with a polar nucleus to form endosperm. 
C)  Two pollen grains combine with two ovules to form the zygote and endosperm. 
D)  One sperm combines with the polar nuclei to form the zygote, and one sperm combines with the egg to form endosperm. 
E)  One sperm combines with the egg to form the zygote, and one sperm combines with the polar nuclei to form endosperm.

Question 2

Based on the accompanying figure, after fertilization, which cell(s) give(s) rise to the embryo plant?

Accepted Answer

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

Question 3

Plant and animal development share a number of features, but differ in major ways. Which of the following is a key difference between plants and animals?

Accepted Answer

A)  Animals typically produce gametes by meiosis; plants produce gametes by mitosis. 
B)  Animal development is controlled by regulatory gene sets such as Hox genes; plants have no similar control systems. 
C)  Animal gametes are produced only after maturity is reached; plant gametes are produced throughout a plant's lifetime. 
A)  Animals typically produce gametes by meiosis; plants produce gametes by mitosis. 
B)  Animal development is controlled by regulatory gene sets such as Hox genes; plants have no similar control systems. 
C)  Animal gametes are produced only after maturity is reached; plant gametes are produced throughout a plant's lifetime.

Question 4

Fruits have contributed to the success of angiosperms by ________.

Accepted Answer

A)  nourishing the plants that make them 
B)  facilitating dispersal of seeds 
C)  attracting insects to the pollen inside 
D)  producing sperm and eggs inside a protective coat 
E)  producing triploid cells via double fertilization 
A)  nourishing the plants that make them 
B)  facilitating dispersal of seeds 
C)  attracting insects to the pollen inside 
D)  producing sperm and eggs inside a protective coat 
E)  producing triploid cells via double fertilization

Question 5

Which of the following is TRUE about vegetative reproduction?

Accepted Answer

A)  It involves both meiosis and mitosis to produce haploid and diploid cells. 
B)  It results in the production of fruits. 
C)  It involves only meiosis. 
D)  It can lead to genetically altered forms of the species. 
E)  It produces clones of the parent plant. 
A)  It involves both meiosis and mitosis to produce haploid and diploid cells. 
B)  It results in the production of fruits. 
C)  It involves only meiosis. 
D)  It can lead to genetically altered forms of the species. 
E)  It produces clones of the parent plant.

Question 6

In the process of alternation of generations, the ________.

Accepted Answer

A)  sporophyte is haploid and produces gametes 
B)  sporophyte is diploid and produces spores 
C)  gametophyte is haploid and produces spores 
D)  gametophyte is diploid and produces gametes 
E)  spores unite to form a zygote 
A)  sporophyte is haploid and produces gametes 
B)  sporophyte is diploid and produces spores 
C)  gametophyte is haploid and produces spores 
D)  gametophyte is diploid and produces gametes 
E)  spores unite to form a zygote

Question 7

The functional role of sporopollenin is primarily to ________.

Accepted Answer

A)  comprise spore surface structures that catch the wind and assist in spore dispersal 
B)  reduce dehydration 
C)  make spores less dense and able to disperse more readily 
D)  repel toxic chemicals 
E)  provide nutrients to spores 
A)  comprise spore surface structures that catch the wind and assist in spore dispersal 
B)  reduce dehydration 
C)  make spores less dense and able to disperse more readily 
D)  repel toxic chemicals 
E)  provide nutrients to spores

Question 8

The ABC genes in Arabidopsis are considered homeotic genes. What could be a reason for this classification?

Accepted Answer

A)  Each of the three genes codes for a different flower organ. 
B)  Each gene codes for regulatory transcription factors. 
C)  Each gene is similar in sequence to homeotic genes in Drosophila. 
D)  Each gene codes for proteins similar to Hox genes in mice. 
A)  Each of the three genes codes for a different flower organ. 
B)  Each gene codes for regulatory transcription factors. 
C)  Each gene is similar in sequence to homeotic genes in Drosophila. 
D)  Each gene codes for proteins similar to Hox genes in mice.

Question 9

The MONOPTEROS gene in Arabidopsis encodes a protein that is similar in its function to which animal protein?

Accepted Answer

A)  MyoD in frog embryos 
B)  Bicoid in fruit fly embryos 
C)  keratin in human embryos 
A)  MyoD in frog embryos 
B)  Bicoid in fruit fly embryos 
C)  keratin in human embryos

Question 10

Which of the following "vegetables" is botanically a fruit?

Accepted Answer

A)  potato 
B)  lettuce 
C)  radish 
D)  celery 
E)  green beans 
A)  potato 
B)  lettuce 
C)  radish 
D)  celery 
E)  green beans

Question 11

Which of the following correctly pairs a flower part with its function?

Accepted Answer

A)  sepals-protect the flower bud 
B)  petals-attract seed-dispersing animals 
C)  the stigma-produces nectar 
D)  the carpel-produces pollen 
A)  sepals-protect the flower bud 
B)  petals-attract seed-dispersing animals 
C)  the stigma-produces nectar 
D)  the carpel-produces pollen

Exam 38: Plant Reproduction and Development

Which of the following statements about double fertilization in angiosperms is correct?

Based on the accompanying figure, after fertilization, which cell(s) give(s) rise to the embryo plant?

Plant and animal development share a number of features, but differ in major ways. Which of the following is a key difference between plants and animals?

Fruits have contributed to the success of angiosperms by ________.

Which of the following is TRUE about vegetative reproduction?

In the process of alternation of generations, the ________.

The functional role of sporopollenin is primarily to ________.

The ABC genes in Arabidopsis are considered homeotic genes. What could be a reason for this classification?

The MONOPTEROS gene in Arabidopsis encodes a protein that is similar in its function to which animal protein?

Which of the following "vegetables" is botanically a fruit?

Which of the following correctly pairs a flower part with its function?

Biology and the Tree of Life

Water and Carbon: the Chemical Basis of Life

Protein Structure and Function

Nucleic Acids and the Rna World

An Introduction to Carbohydrates

Ecosystems and Global Ecology

Lipids, Membranes, and the First Cells

Inside the Cell

Energy and Enzymes: an Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

Cellcell Interactions

The Cell Cycle

Meiosis

Mendel and the Gene

Dna and the Gene: Synthesis and Repair

How Genes Work

Transcription, Rna Processing, and Translation

Control of Gene Expression in Bacteria

Control of Gene Expression in Eukaryotes

The Molecular Revolution: Biotechnology and Beyond

Genes, Development, and Evolution

Evolution by Natural Selection

Evolutionary Processes

Speciation

Phylogenies and the History of Life

Bacteria and Archaea

Protists

Green Algae and Land Plants

Fungi

An Introduction to Animals

Protostome Animals

Deuterostome Animals

Viruses

Plant Form and Function

Water and Sugar Transport in Plants

Plant Nutrition

Plant Sensory Systems, Signals, and Responses

Animal Form and Function

Water and Electrolyte Balance in Animals

Animal Nutrition

Gas Exchange and Circulation

Animal Nervous Systems

Animal Sensory Systems

Animal Movement

Chemical Signals in Animals

Animal Reproduction and Development

The Immune System in Animals

An Introduction to Ecology

Behavioral Ecology

Population Ecology

Community Ecology

Biodiversity and Conservation Biology

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