Question 1

The typical conifer growth pattern of narrow tops and broad bases is strongly associated with the action of

Accepted Answer

A)  abscisic acid. 
B)  gibberellin. 
C)  auxin. 
D)  ethylene. 
A)  abscisic acid. 
B)  gibberellin. 
C)  auxin. 
D)  ethylene. C

Question 2

How might the observation that the percentage of plant species with red foliage is greatest among high-elevation plants be explained?

Accepted Answer

A)  Atmospheric composition at high elevation reduces the strength of the wavelengths that normally support photosynthesis. 
B)  High-elevation soils have above-average concentrations of iron,which accumulate to produce iron oxide within the foliage. 
C)  The red wavelengths exacerbate dehydration at high elevation,so mountain plants reflect it from their surfaces. 
D)  Red pigments absorb ultraviolet radiation,which is more intense at high elevation. 
A)  Atmospheric composition at high elevation reduces the strength of the wavelengths that normally support photosynthesis. 
B)  High-elevation soils have above-average concentrations of iron,which accumulate to produce iron oxide within the foliage. 
C)  The red wavelengths exacerbate dehydration at high elevation,so mountain plants reflect it from their surfaces. 
D)  Red pigments absorb ultraviolet radiation,which is more intense at high elevation. D

Question 3

The outer bark on trees often appears cracked and uneven because

Accepted Answer

A)  different regions of the bark grow at different rates. 
B)  the cork cambium reabsorbs some of the bark. 
C)  increases in stem length stretch the bark. 
D)  increases in stem thickness stretch the bark. 
A)  different regions of the bark grow at different rates. 
B)  the cork cambium reabsorbs some of the bark. 
C)  increases in stem length stretch the bark. 
D)  increases in stem thickness stretch the bark. D

Question 4

The gene-for-gene recognition immune response involves

Accepted Answer

A)  plant alleles that attack matching alleles in pathogens. 
B)  crossing-over between plant alleles and pathogen alleles. 
C)  production of antibodies by plants in response to antigens produced by pathogens. 
D)  production of proteins by plants that protect against pathogens with a particular genetic makeup. 
A)  plant alleles that attack matching alleles in pathogens. 
B)  crossing-over between plant alleles and pathogen alleles. 
C)  production of antibodies by plants in response to antigens produced by pathogens. 
D)  production of proteins by plants that protect against pathogens with a particular genetic makeup.

Question 5

Apical dominance develops when the shoot apex produces ________,a hormone that suppresses the outgrowth of lateral buds.

Accepted Answer

The answer of Apical dominance develops when the shoot apex...

Question 6

Plant growth is indeterminate and animal growth is determinant.Why is indeterminate growth more beneficial to plants than to animals?

Accepted Answer

A)  Plants are stationary in their habitats,whereas animals can move;indeterminate growth allows a plant to respond to varying environmental conditions. 
B)  Plants are commonly eaten by animals,whereas animals are rarely eaten by plants. 
C)  Indeterminate growth allows plants to become larger than animals. 
D)  Indeterminate growth allows plants to avoid reproducing when environmental conditions are unfavorable. 
A)  Plants are stationary in their habitats,whereas animals can move;indeterminate growth allows a plant to respond to varying environmental conditions. 
B)  Plants are commonly eaten by animals,whereas animals are rarely eaten by plants. 
C)  Indeterminate growth allows plants to become larger than animals. 
D)  Indeterminate growth allows plants to avoid reproducing when environmental conditions are unfavorable.

Question 7

What is the purpose for the endosperm found within a seed?

Accepted Answer

A)  Endosperm is the tissue specialized to form roots. 
B)  It creates a waterproof covering that permits the seed to become dormant. 
C)  It is a water-storage tissue. 
D)  It is used as a food source for the developing embryo. 
A)  Endosperm is the tissue specialized to form roots. 
B)  It creates a waterproof covering that permits the seed to become dormant. 
C)  It is a water-storage tissue. 
D)  It is used as a food source for the developing embryo.

Question 8

Pollen is produced in the

Accepted Answer

A)  ovules. 
B)  anthers. 
C)  style. 
D)  stigma. 
A)  ovules. 
B)  anthers. 
C)  style. 
D)  stigma.

Question 9

Plants produce hormones that regulate growth responses like gravitropism.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following does NOT help a plant deter herbivores,insects,or bacteria?

Accepted Answer

A)  antimicrobial chemicals 
B)  the production of auxin 
C)  dermal hairs on the stem and leaves 
D)  gene-for-gene recognition 
A)  antimicrobial chemicals 
B)  the production of auxin 
C)  dermal hairs on the stem and leaves 
D)  gene-for-gene recognition

Question 11

What part(s)of the embryo sac shown in the diagram below fuse(s)with sperm from a pollen grain?

Accepted Answer

A)  A 
B)  A and B 
C)  A and D 
D)  D 
A)  A 
B)  A and B 
C)  A and D 
D)  D

Question 12

Seed coats develop from the outer portion of the ________.

Accepted Answer

The answer of Seed coats develop from the outer portion...

Question 13

The figure below illustrates the results of a laboratory experiment that simulates potted irises being exposed to differing lengths of darkness.
 
How would flowering in these irises be affected by disrupting the length of their light exposure?

Accepted Answer

A)  It would stimulate flowering. 
B)  It would suppress flowering. 
C)  It would stimulate branching and increase total flower production. 
D)  There would be no effect because irises use the length of darkness to coordinate flowering. 
A)  It would stimulate flowering. 
B)  It would suppress flowering. 
C)  It would stimulate branching and increase total flower production. 
D)  There would be no effect because irises use the length of darkness to coordinate flowering.

Question 14

Aboveground,plants grow by adding new bud-stem-________ units.

Accepted Answer

The answer of Aboveground,plants grow by adding new bud-stem-________ units....

Question 15

Plants grow in length

Accepted Answer

A)  from lateral meristems located within the stem. 
B)  due to the elongation of cells throughout the body of the plant. 
C)  from vascular cambium located just under the bark. 
D)  only at the tips of the roots and the shoots where apical meristems are located. 
A)  from lateral meristems located within the stem. 
B)  due to the elongation of cells throughout the body of the plant. 
C)  from vascular cambium located just under the bark. 
D)  only at the tips of the roots and the shoots where apical meristems are located.

Question 16

Plants exhibit indeterminate growth.This means that

Accepted Answer

A)  they are perennials. 
B)  they may complete their life cycles in 1,2,or 3 years. 
C)  the length of time it takes to grow to reach maturity is variable. 
D)  the final form of the plant is not entirely predictable. 
A)  they are perennials. 
B)  they may complete their life cycles in 1,2,or 3 years. 
C)  the length of time it takes to grow to reach maturity is variable. 
D)  the final form of the plant is not entirely predictable.

Question 17

Anthers are typically attached to filaments and elevated within the flower to

Accepted Answer

A)  improve the transfer of pollen to a pollinator. 
B)  improve the transfer of pollen to the adjacent stigma. 
C)  prevent pollen from becoming stuck in the nectar. 
D)  prevent the pollen from being blown away from the flower. 
A)  improve the transfer of pollen to a pollinator. 
B)  improve the transfer of pollen to the adjacent stigma. 
C)  prevent pollen from becoming stuck in the nectar. 
D)  prevent the pollen from being blown away from the flower.

Question 18

Double fertilization results in the formation of a(n)________ and a(n)________.

Accepted Answer

zygote;end

Question 19

The energy used by the developing embryo and the seedling before it begins photosynthesis is stored in the ________ and the ________.

Accepted Answer

cotyledons

Question 20

Because its cells are diploid,the ovule is considered to be a part of the

Accepted Answer

A)  gametophyte. 
B)  carpal. 
C)  embryo sac. 
D)  sporophyte. 
A)  gametophyte. 
B)  carpal. 
C)  embryo sac. 
D)  sporophyte.

Exam 35: Plant Growth and Reproduction

The typical conifer growth pattern of narrow tops and broad bases is strongly associated with the action of

How might the observation that the percentage of plant species with red foliage is greatest among high-elevation plants be explained?

The outer bark on trees often appears cracked and uneven because

The gene-for-gene recognition immune response involves

Apical dominance develops when the shoot apex produces ________,a hormone that suppresses the outgrowth of lateral buds.

Plant growth is indeterminate and animal growth is determinant.Why is indeterminate growth more beneficial to plants than to animals?

What is the purpose for the endosperm found within a seed?

Pollen is produced in the

Plants produce hormones that regulate growth responses like gravitropism.

Which of the following does NOT help a plant deter herbivores,insects,or bacteria?

What part(s)of the embryo sac shown in the diagram below fuse(s)with sperm from a pollen grain?

Seed coats develop from the outer portion of the ________.

The figure below illustrates the results of a laboratory experiment that simulates potted irises being exposed to differing lengths of darkness. How would flowering in these irises be affected by disrupting the length of their light exposure?

Aboveground,plants grow by adding new bud-stem-________ units.

Plants grow in length

Plants exhibit indeterminate growth.This means that

Anthers are typically attached to filaments and elevated within the flower to

Double fertilization results in the formation of a(n)________ and a(n)________.

The energy used by the developing embryo and the seedling before it begins photosynthesis is stored in the ________ and the ________.

Because its cells are diploid,the ovule is considered to be a part of the

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Structure and Internal Compartments

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photosynthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

Internal Organization and Homeostasis

Nutrition and Digestion

Circulation and Gas Exchange

Animal Hormones

Nervous and Sensory Systems

Skeletons,Muscles,and Movement

The Immune System

Reproduction and Development

Plant Structure, Nutrition, and Transport

Filters

Double fertilization results in the formation of a(n) and a(n).

The energy used by the developing embryo and the seedling before it begins photosynthesis is stored in the and the .