Question 1

In order for a megasporocyte to turn into an egg cell, which of the following processes are required?

Accepted Answer

A)  Meiosis followed by mitosis 
B)  Mitosis followed by meiosis 
C)  Several meiotic divisions only 
D)  Several mitotic divisions only 
E)  Several nuclear fusion events 
A)  Meiosis followed by mitosis 
B)  Mitosis followed by meiosis 
C)  Several meiotic divisions only 
D)  Several mitotic divisions only 
E)  Several nuclear fusion events

Question 2

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

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 3

For plants that flower in response to photoperiodic stimuli, the most critical determinant in the light-dark cycle is the

Accepted Answer

A)  temperature. 
B)  length of the dark period for short-day plants and length of the light period for long-day plants. 
C)  length of the light period for short-day plants and length of the dark period for long-day plants. 
D)  length of the uninterrupted dark cycle. 
E)  length of the uninterrupted light cycle. 
A)  temperature. 
B)  length of the dark period for short-day plants and length of the light period for long-day plants. 
C)  length of the light period for short-day plants and length of the dark period for long-day plants. 
D)  length of the uninterrupted dark cycle. 
E)  length of the uninterrupted light cycle.

Question 4

Use the following to answer questions :
Refer to the diagram below.  
-Name the cell that will help form the zygote and identify its label.

Accepted Answer

The answer of Use the following to answer questions :
Refer...

Question 5

As a pollen tube grows into the embryo sac, two _______ are delivered to one of the synergids.

Accepted Answer

A)  sperm cells 
B)  generative nuclei 
C)  tube nuclei 
D)  pollen nuclei 
E)  microspores 
A)  sperm cells 
B)  generative nuclei 
C)  tube nuclei 
D)  pollen nuclei 
E)  microspores

Question 6

The receptor of the photoperiod that induces flowering

Accepted Answer

A)  is intertwined with the biological clock. 
B)  is in the stems. 
C)  is in the roots. 
D)  does not transmit the results of the stimulus to the rest of the plant. 
E)  All of the above 
A)  is intertwined with the biological clock. 
B)  is in the stems. 
C)  is in the roots. 
D)  does not transmit the results of the stimulus to the rest of the plant. 
E)  All of the above

Question 7

Apomixis involves

Accepted Answer

A)  sexual reproduction. 
B)  complete meiosis. 
C)  fertilization. 
D)  a diploid embryo. 
E)  no production of a seed. 
A)  sexual reproduction. 
B)  complete meiosis. 
C)  fertilization. 
D)  a diploid embryo. 
E)  no production of a seed.

Question 8

The physiological mechanism by which plants measure photoperiod involves a pigment called _______. This pigment alternates between two forms, one that absorbs _______ light and another that absorbs _______ light.

Accepted Answer

phytochrom

Question 9

The major role of the fruit of a flowering plant is the facilitation of _______.

Accepted Answer

The answer of The major role of the fruit of...

Question 10

After pollination, which of the following events is crucial for fertilization?

Accepted Answer

A)  Sperm must swim to the egg and the polar nuclei. 
B)  Petals must close around the reproductive parts. 
C)  Meiosis must occur within the pollen grain. 
D)  A pollen tube must grow from the stigma to the ovule. 
E)  An insect must deliver pollen to the stigma. 
A)  Sperm must swim to the egg and the polar nuclei. 
B)  Petals must close around the reproductive parts. 
C)  Meiosis must occur within the pollen grain. 
D)  A pollen tube must grow from the stigma to the ovule. 
E)  An insect must deliver pollen to the stigma.

Question 11

A flowering plant may reproduce asexually. When it does so,

Accepted Answer

A)  the progeny are genetically identical to the parent. 
B)  the progeny may be better adapted to the environment than the parent. 
C)  the progeny will show more genetic diversity than the parent. 
D)  the sexual organs of flowers are usually involved. 
E)  the progeny cannot reproduce sexually. 
A)  the progeny are genetically identical to the parent. 
B)  the progeny may be better adapted to the environment than the parent. 
C)  the progeny will show more genetic diversity than the parent. 
D)  the sexual organs of flowers are usually involved. 
E)  the progeny cannot reproduce sexually.

Question 12

Pollination

Accepted Answer

A)  is the transfer of pollen from the anther to the stigma. 
B)  always results in seed formation. 
C)  is the transfer of pollen from the stigma to the anther. 
D)  is synonymous with fertilization. 
E)  always requires water. 
A)  is the transfer of pollen from the anther to the stigma. 
B)  always results in seed formation. 
C)  is the transfer of pollen from the stigma to the anther. 
D)  is synonymous with fertilization. 
E)  always requires water.

Question 13

Which of the following is a distinguishing characteristic of all angiosperms?

Accepted Answer

A)  Double cotyledons 
B)  Fleshy cotyledons 
C)  Seeds with nutrients 
D)  Double fertilization 
E)  Pollen production 
A)  Double cotyledons 
B)  Fleshy cotyledons 
C)  Seeds with nutrients 
D)  Double fertilization 
E)  Pollen production

Question 14

In flowering plants, pollen is transferred to the

Accepted Answer

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

Question 15

Short-day plants usually flower

Accepted Answer

A)  in the spring. 
B)  in midsummer. 
C)  when day length is below a critical maximum. 
D)  when day length is above a critical maximum. 
E)  throughout the summer. 
A)  in the spring. 
B)  in midsummer. 
C)  when day length is below a critical maximum. 
D)  when day length is above a critical maximum. 
E)  throughout the summer.

Question 16

Coconut fruits are dispersed 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 17

Florigen is

Accepted Answer

A)  produced in the leaves and transported to the apical bud. 
B)  produced in the roots and transported to the shoots. 
C)  produced in the coleoptile tip and transported to the base. 
D)  the same as gibberellin. 
E)  activated by prolonged (more than a month) high temperature. 
A)  produced in the leaves and transported to the apical bud. 
B)  produced in the roots and transported to the shoots. 
C)  produced in the coleoptile tip and transported to the base. 
D)  the same as gibberellin. 
E)  activated by prolonged (more than a month) high temperature.

Question 18

A plant that does not require external stimuli to flower may employ which of the following mechanisms instead?

Accepted Answer

A)  An internal clock 
B)  An unknown internal signal 
C)  A genetic program insensitive to the environment 
D)  A signal pathway dependent upon bud position 
E)  All of the above 
A)  An internal clock 
B)  An unknown internal signal 
C)  A genetic program insensitive to the environment 
D)  A signal pathway dependent upon bud position 
E)  All of the above

Question 19

Which of the following is not a category of flowering plants?

Accepted Answer

A)  Annuals 
B)  Biennials 
C)  Perennials 
D)  Indeterminants 
E)  Both a and c 
A)  Annuals 
B)  Biennials 
C)  Perennials 
D)  Indeterminants 
E)  Both a and c

Question 20

Use the following to answer questions :
Refer to the diagram below.  
-Name the three cells of the embryo sac that do not participate in double fertilization and identify their label(s).

Accepted Answer

The answer of Use the following to answer questions :
Refer...

Exam 38: Reproduction in Flowering Plants

In order for a megasporocyte to turn into an egg cell, which of the following processes are required?

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

For plants that flower in response to photoperiodic stimuli, the most critical determinant in the light-dark cycle is the

Use the following to answer questions : Refer to the diagram below. -Name the cell that will help form the zygote and identify its label.

As a pollen tube grows into the embryo sac, two _______ are delivered to one of the synergids.

The receptor of the photoperiod that induces flowering

Apomixis involves

The physiological mechanism by which plants measure photoperiod involves a pigment called _______. This pigment alternates between two forms, one that absorbs _______ light and another that absorbs _______ light.

The major role of the fruit of a flowering plant is the facilitation of _______.

After pollination, which of the following events is crucial for fertilization?

A flowering plant may reproduce asexually. When it does so,

Pollination

Which of the following is a distinguishing characteristic of all angiosperms?

In flowering plants, pollen is transferred to the

Short-day plants usually flower

Coconut fruits are dispersed by

Florigen is

A plant that does not require external stimuli to flower may employ which of the following mechanisms instead?

Which of the following is not a category of flowering plants?

Use the following to answer questions : Refer to the diagram below. -Name the three cells of the embryo sac that do not participate in double fertilization and identify their label(s).

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

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

The physiological mechanism by which plants measure photoperiod involves a pigment called ___. This pigment alternates between two forms, one that absorbs _ light and another that absorbs _____ light.