Question 1

The seeds of a new kind of corn germinate while attached to the cob,which is unusual.How do these seeds differ from normal?

Accepted Answer

A)  They are not dispersed. 
B)  They contain reserves. 
C)  They are released from the fruit. 
D)  They do not become dormant. 
E)  They are protected from animal predators. 
A)  They are not dispersed. 
B)  They contain reserves. 
C)  They are released from the fruit. 
D)  They do not become dormant. 
E)  They are protected from animal predators.

Question 2

The ability of plants to measure night length was determined by experiments in which

Accepted Answer

A)  plants were grown in 12 hours of darkness alternating with 12 hours of light. 
B)  plants were grown in continuous light. 
C)  plants were grown in dark periods that were interrupted with brief pulses of light. 
D)  flowering was measured in plants of different ages that had been placed on the same light-dark schedule. 
E)  plants were grown in a 24-hour cycle in which the length of the light period was increased gradually. 
A)  plants were grown in 12 hours of darkness alternating with 12 hours of light. 
B)  plants were grown in continuous light. 
C)  plants were grown in dark periods that were interrupted with brief pulses of light. 
D)  flowering was measured in plants of different ages that had been placed on the same light-dark schedule. 
E)  plants were grown in a 24-hour cycle in which the length of the light period was increased gradually.

Question 3

In a short-day plant like cocklebur,which has a critical day length of 15 hours,flowering could be induced by _______ hours of light alternating with _______.

Accepted Answer

A)  12;12 hours of darkness 
B)  16;8 hours of darkness 
C)  14;8 hours of darkness 
D)  8;8 hours of darkness 
E)  15;9 hours of darkness,interrupted by one short burst of white light 
A)  12;12 hours of darkness 
B)  16;8 hours of darkness 
C)  14;8 hours of darkness 
D)  8;8 hours of darkness 
E)  15;9 hours of darkness,interrupted by one short burst of white light

Question 4

Which sequence represents the correct ordering of the events in the angiosperm life cycle?

Accepted Answer

A)  Division of diploid zygote $\rightarrow$  pollen grain reaches a sporophyte $\rightarrow$  fertilization $\rightarrow$ production of pollen tube 
B)  Pollen grain reaches a sporophyte $\rightarrow$ production of pollen tube $\rightarrow$  fertilization$\rightarrow$ division of diploid zygote 
C)  Pollen grain reaches a sporophyte $\rightarrow$  division of diploid zygote $\rightarrow$  production of pollen tube $\rightarrow$ fertilization 
D)  Production of pollen tube $\rightarrow$  fertilization $\rightarrow$  division of diploid zygote $\rightarrow$  pollen grain reaches a sporophyte 
E)  Fertilization $\rightarrow$  pollen grain reaches a sporophyte $\rightarrow$  production of pollen tube $\rightarrow$  division of diploid zygote 
A)  Division of diploid zygote $\rightarrow$  pollen grain reaches a sporophyte $\rightarrow$  fertilization $\rightarrow$ production of pollen tube 
B)  Pollen grain reaches a sporophyte $\rightarrow$ production of pollen tube $\rightarrow$  fertilization$\rightarrow$ division of diploid zygote 
C)  Pollen grain reaches a sporophyte $\rightarrow$  division of diploid zygote $\rightarrow$  production of pollen tube $\rightarrow$ fertilization 
D)  Production of pollen tube $\rightarrow$  fertilization $\rightarrow$  division of diploid zygote $\rightarrow$  pollen grain reaches a sporophyte 
E)  Fertilization $\rightarrow$  pollen grain reaches a sporophyte $\rightarrow$  production of pollen tube $\rightarrow$  division of diploid zygote

Question 5

A conifer is found with homologs of the genes that determine the location of floral parts in the flower.These are homologs of _______ genes.

Accepted Answer

A)  meristem identity 
B)  whorl 
C)  flowering time 
D)  apical 
E)  floral organ identity 
A)  meristem identity 
B)  whorl 
C)  flowering time 
D)  apical 
E)  floral organ identity

Question 6

A newly grown lemon plant is placed next to the parent plant that had produced the seed.The two plants prove to be identical,indicating it was an apomictic seed.What else can be said about this seed?

Accepted Answer

A)  It was produced when two sperm fertilized one egg. 
B)  It developed from one egg alone. 
C)  It was the result of parental self-fertilization. 
D)  It formed without fertilization. 
E)  It was homozygous for most genetic traits. 
A)  It was produced when two sperm fertilized one egg. 
B)  It developed from one egg alone. 
C)  It was the result of parental self-fertilization. 
D)  It formed without fertilization. 
E)  It was homozygous for most genetic traits.

Question 7

To produce virus-free plants via tissue culture,it is important to use _______ cultures.

Accepted Answer

A)  seed 
B)  callus 
C)  meristem 
D)  ovary 
E)  style 
A)  seed 
B)  callus 
C)  meristem 
D)  ovary 
E)  style

Question 8

Double fertilization in flowering plants results in the production of

Accepted Answer

A)  two diploid embryos. 
B)  one diploid embryo and a diploid endosperm. 
C)  two diploid embryos and a haploid endosperm. 
D)  one diploid embryo and a triploid endosperm. 
E)  two diploid embryos and a diploid seed coat. 
A)  two diploid embryos. 
B)  one diploid embryo and a diploid endosperm. 
C)  two diploid embryos and a haploid endosperm. 
D)  one diploid embryo and a triploid endosperm. 
E)  two diploid embryos and a diploid seed coat.

Question 9

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

Question 10

An entire grove of aspens will usually change color simultaneously in the fall.The reason for this is that all of the trees have developed from _______ that were produced _______.

Accepted Answer

A)  seeds;sexually 
B)  clones;asexually 
C)  seeds;asexually 
D)  clones;sexually 
E)  different species;in the same area 
A)  seeds;sexually 
B)  clones;asexually 
C)  seeds;asexually 
D)  clones;sexually 
E)  different species;in the same area

Question 11

A seed consists of a _______ embryo,a _______ endosperm,and a _______ seed coat.

Accepted Answer

A)  diploid;triploid;diploid 
B)  haploid;triploid;diploid 
C)  diploid;triploid;haploid 
D)  diploid;diploid;diploid 
E)  haploid;diploid;haploid 
A)  diploid;triploid;diploid 
B)  haploid;triploid;diploid 
C)  diploid;triploid;haploid 
D)  diploid;diploid;diploid 
E)  haploid;diploid;haploid

Question 12

Suppose you are stranded on a desert island that is bare of vegetation.One day at low tide you notice a coconut that was not present the day before.It was most likely dispersed from its parent plant by

Accepted Answer

A)  monkeys. 
B)  wind. 
C)  fruit bats. 
D)  water. 
E)  birds. 
A)  monkeys. 
B)  wind. 
C)  fruit bats. 
D)  water. 
E)  birds.

Question 13

Technically,short-day plants flower when the _______ period _______ a critical maximum.

Accepted Answer

A)  night;equals 
B)  day;equals 
C)  day;is longer than 
D)  day;is shorter than 
E)  night;is shorter than 
A)  night;equals 
B)  day;equals 
C)  day;is longer than 
D)  day;is shorter than 
E)  night;is shorter than

Question 14

What could be expected from a mutant plant that lacks expression of the FLOWERING LOCUS C (FLC)gene?

Accepted Answer

A)  Earlier flowering than in the wild type 
B)  More leaves than in the wild type 
C)  More flower petals per flower than in the wild type 
D)  Fewer leaf hairs than in the wild type 
E)  None of the above 
A)  Earlier flowering than in the wild type 
B)  More leaves than in the wild type 
C)  More flower petals per flower than in the wild type 
D)  Fewer leaf hairs than in the wild type 
E)  None of the above

Question 15

Even if a plant receives an inductive stimulus that would normally lead to flowering,the flowering may be prevented by a quick removal of 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 16

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 17

Which statement about a genetically self-incompatible species of plant is most likely false?

Accepted Answer

A)  It has many S alleles. 
B)  Its self pollen germinates poorly. 
C)  Its self pollen tubes grow poorly. 
D)  Its self pollen attaches poorly to pollinators. 
E)  Its recognition of self pollen involves proteins. 
A)  It has many S alleles. 
B)  Its self pollen germinates poorly. 
C)  Its self pollen tubes grow poorly. 
D)  Its self pollen attaches poorly to pollinators. 
E)  Its recognition of self pollen involves proteins.

Question 18

Angiosperm seeds develop

Accepted Answer

A)  on a normal leaf. 
B)  in a fruit. 
C)  at the base of the flower next to sepals. 
D)  in the style. 
E)  in the stalk of the stamen. 
A)  on a normal leaf. 
B)  in a fruit. 
C)  at the base of the flower next to sepals. 
D)  in the style. 
E)  in the stalk of the stamen.

Question 19

Which of the following is not a pattern of plant flowering?

Accepted Answer

A)  Annual 
B)  Biennial 
C)  Perennial 
D)  Diapausal 
E)  Both a and c 
A)  Annual 
B)  Biennial 
C)  Perennial 
D)  Diapausal 
E)  Both a and c

Question 20

The integuments of the ovule develop into the _______,and the carpels ultimately become the wall of the _______.

Accepted Answer

A)  seed coat;fruit 
B)  cotyledons;endosperm 
C)  cotyledons;seed coat 
D)  endosperm;seed coat 
E)  cotyledons;fruit 
A)  seed coat;fruit 
B)  cotyledons;endosperm 
C)  cotyledons;seed coat 
D)  endosperm;seed coat 
E)  cotyledons;fruit

Exam 27: Reproduction of Flowering Plants

The seeds of a new kind of corn germinate while attached to the cob,which is unusual.How do these seeds differ from normal?

The ability of plants to measure night length was determined by experiments in which

In a short-day plant like cocklebur,which has a critical day length of 15 hours,flowering could be induced by _______ hours of light alternating with _______.

Which sequence represents the correct ordering of the events in the angiosperm life cycle?

A conifer is found with homologs of the genes that determine the location of floral parts in the flower.These are homologs of _______ genes.

A newly grown lemon plant is placed next to the parent plant that had produced the seed.The two plants prove to be identical,indicating it was an apomictic seed.What else can be said about this seed?

To produce virus-free plants via tissue culture,it is important to use _______ cultures.

Double fertilization in flowering plants results in the production of

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

An entire grove of aspens will usually change color simultaneously in the fall.The reason for this is that all of the trees have developed from _______ that were produced _______.

A seed consists of a _______ embryo,a _______ endosperm,and a _______ seed coat.

Suppose you are stranded on a desert island that is bare of vegetation.One day at low tide you notice a coconut that was not present the day before.It was most likely dispersed from its parent plant by

Technically,short-day plants flower when the _______ period _______ a critical maximum.

What could be expected from a mutant plant that lacks expression of the FLOWERING LOCUS C (FLC)gene?

Even if a plant receives an inductive stimulus that would normally lead to flowering,the flowering may be prevented by a quick removal of the

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

Which statement about a genetically self-incompatible species of plant is most likely false?

Angiosperm seeds develop

Which of the following is not a pattern of plant flowering?

The integuments of the ovule develop into the _______,and the carpels ultimately become the wall of the _______.

Introduction

The Chemistry and Energy of Life

Nucleic Acids, Proteins, and Enzymes

Cells: the Working Units of Life

Cell Membranes and Signaling

Pathways That Harvest and Store Chemical Energy

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

DNA and Its Role in Heredity

From Dna to Protein: Gene Expression

Regulation of Gene Expression

Genomes

Biotechnology

Genes, Development, and Evolution

Processes of Evolution

Reconstructing and Using Phylogenies

Speciation

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

The Evolution of Plants

The Evolution and Diversity of Fungi

Animal Origins and Diversity

The Plant Body

Plant Nutrition and Transport

Plant Growth and Development

Plants in the Environment

Fundamentals of Animal Function

Nutrition and Digestion

Breathing

Circulation

Muscle and Movement

Neurons, Sense Organs, and Nervous Systems

Nervous and Endocrine Control

Water and Salts: Excretion

Animal Reproduction

Animal Development

Immunology: Animal Defense Systems

Animal Behavior

The Distribution of Earths Ecological Systems

Populations

Ecological and Evolutionary Consequences of Interactions Within and Among Species

Ecological Communities

The Global Ecosystem

Filters

In a short-day plant like cocklebur,which has a critical day length of 15 hours,flowering could be induced by _ hours of light alternating with _.

An entire grove of aspens will usually change color simultaneously in the fall.The reason for this is that all of the trees have developed from _ that were produced _.

A seed consists of a ___ embryo,a _ endosperm,and a _____ seed coat.

Technically,short-day plants flower when the _ period _ a critical maximum.

The integuments of the ovule develop into the _,and the carpels ultimately become the wall of the _.