Question 1

________ prevent or slow the spread of the initial infection.

Accepted Answer

A)  Axillary buds 
B)  Casparian strips 
C)  Phytochromes 
D)  Immune cells 
E)  Necrotic lesions 
A)  Axillary buds 
B)  Casparian strips 
C)  Phytochromes 
D)  Immune cells 
E)  Necrotic lesions E

Question 2

Match between columns
                        Premises: Flowering does not respond to light length

Accepted Answer

The Answer of Short-day plant and Day-neutral plant and Intermediate-day is...

Question 3

Match between columns
                        Premises: Involves auxin

Accepted Answer

The Answer of Phototropism and Gravitropism and Thigmotropism and Thigmomorphogenesis is...

Question 4

PhyB may inhibit flowering in

Accepted Answer

A)  day-neutral plants. 
B)  vernalized plants. 
C)  long-day plants. 
D)  senescing plants. 
E)  short-day plants. 
A)  day-neutral plants. 
B)  vernalized plants. 
C)  long-day plants. 
D)  senescing plants. 
E)  short-day plants.

Question 5

Describe the evidence for the existence of both a flowering promoter and a flowering inhibitor.

Accepted Answer

A long-day tobacco plant is grafted to a

Question 6

Match between columns
                        Premises: Developmental response to mechanical stimuli

Accepted Answer

The Answer of Thigmotropism and Thigmomorphogenesis and Phototropism and Gravitropism is...

Question 7

Match between columns
                        Premises: Directional growth caused by gravity

Accepted Answer

The Answer of Phototropism and Thigmotropism and Thigmomorphogenesis and Gravitropism is...

Question 8

Match between columns
                        Premises: Does not flower when night length is too long or too short

Accepted Answer

The Answer of Short-day plant and Long-day plant and Day-neutral is...

Question 9

Match between columns
                        Premises: Delays senescence

Accepted Answer

The Answer of Ethylene and Brassinosteroid and Abscisic acid and is...

Question 10

You expose a plant to a light that shines on the right side of a plant. Which statement best explains why the plant grows toward the light?

Accepted Answer

A)  Light destroys auxin, and thus the shaded side grows faster. 
B)  Auxin moves from the shaded side to the lighted side where it stimulates growth. 
C)  Auxin moves from the lighted side to the shaded side where it stimulates growth. 
D)  Light destroys auxin and thus the lighted side grows faster. 
E)  Auxin moves from the shaded side to the lighted side where it inhibits growth. 
A)  Light destroys auxin, and thus the shaded side grows faster. 
B)  Auxin moves from the shaded side to the lighted side where it stimulates growth. 
C)  Auxin moves from the lighted side to the shaded side where it stimulates growth. 
D)  Light destroys auxin and thus the lighted side grows faster. 
E)  Auxin moves from the shaded side to the lighted side where it inhibits growth.

Question 11

Which statement concerning the auxin F-box protein is false ?

Accepted Answer

A)  It is located in the nucleus. 
B)  It is a type of receptor. 
C)  It is involved in catalyzing the addition of ubiquitin tags. 
D)  Plants have about 700 of these. 
E)  An example is the transport inhibitor response 1 protein. 
A)  It is located in the nucleus. 
B)  It is a type of receptor. 
C)  It is involved in catalyzing the addition of ubiquitin tags. 
D)  Plants have about 700 of these. 
E)  An example is the transport inhibitor response 1 protein.

Question 12

Summarize the effects of each of the six classes of plant hormones.

Accepted Answer

Concepts to Consider: Auxins promote cel

Question 13

The movement of auxin downward from its site of production is referred to as

Accepted Answer

A)  gravitropism. 
B)  apical dominance. 
C)  nonpolar transport. 
D)  polar transport. 
E)  turgor movement. 
A)  gravitropism. 
B)  apical dominance. 
C)  nonpolar transport. 
D)  polar transport. 
E)  turgor movement.

Question 14

Which statement concerning phytochrome-induced responses is false ?

Accepted Answer

A)  All responses are rapid and short term. 
B)  Red light causes potassium channels to open. 
C)  The absorption of light by one part of the phytochrome molecule triggers a conformational change in another part. 
D)  Phytochrome activates transcription of the gene for a subunit of rubisco. 
E)  Far-red light causes potassium channels to close. 
A)  All responses are rapid and short term. 
B)  Red light causes potassium channels to open. 
C)  The absorption of light by one part of the phytochrome molecule triggers a conformational change in another part. 
D)  Phytochrome activates transcription of the gene for a subunit of rubisco. 
E)  Far-red light causes potassium channels to close.

Question 15

Changing day length, as well as variations in precipitation and temperature, are environmental cues that exert an important influence on

Accepted Answer

A)  the kinds of genes a plant has. 
B)  the number of mutations that genes undergo. 
C)  whether a plant is an annual, biennial, or perennial. 
D)  which genes will be expressed in a plant. 
E)  whether a plant reproduces sexually or asexually. 
A)  the kinds of genes a plant has. 
B)  the number of mutations that genes undergo. 
C)  whether a plant is an annual, biennial, or perennial. 
D)  which genes will be expressed in a plant. 
E)  whether a plant reproduces sexually or asexually.

Question 16

Match between columns
                        Premises: Triggers the synthesis of amylase in barley seeds

Accepted Answer

The Answer of Abscisic acid and Brassinosteroid and Ethylene and is...

Question 17

Which of the following statements is true?

Accepted Answer

A)  A short-day plant flowers when it is grown under short-night conditions. 
B)  A short-day plant flowers when exposed to a long night interrupted with a brief flash of red light. 
C)  A long-day plant does not flower when grown under long-night conditions. 
D)  A long-day plant flowers when grown under long-night conditions. 
E)  A long-day plant does not flower when grown under long-night conditions unless the long night is interrupted with a brief flash of red light. 
A)  A short-day plant flowers when it is grown under short-night conditions. 
B)  A short-day plant flowers when exposed to a long night interrupted with a brief flash of red light. 
C)  A long-day plant does not flower when grown under long-night conditions. 
D)  A long-day plant flowers when grown under long-night conditions. 
E)  A long-day plant does not flower when grown under long-night conditions unless the long night is interrupted with a brief flash of red light.

Question 18

Ethylene stimulates the ripening of fruits.

Accepted Answer

A) True 
 B)False

Question 19

Figure 38-2 ​
 
Refer to the accompanying figure. What does the photoperiodic response of the plant in Row A suggest?

Accepted Answer

A)  A brief dark period is the light cue that induces flowering. 
B)  A brief daylight period is the light cue that induces flowering. 
C)  A long uninterrupted daylight period is the light cue that induces flowering. 
D)  A long uninterrupted dark period is the light cue that induces flowering. 
E)  A determination cannot be made from the data provided. 
A)  A brief dark period is the light cue that induces flowering. 
B)  A brief daylight period is the light cue that induces flowering. 
C)  A long uninterrupted daylight period is the light cue that induces flowering. 
D)  A long uninterrupted dark period is the light cue that induces flowering. 
E)  A determination cannot be made from the data provided.

Question 20

The site of gravity perception in roots is the root apical meristem.

Accepted Answer

A) True 
 B)False

Exam 38: Plant Developmental Responses to External and Internal Signals

________ prevent or slow the spread of the initial infection.

PhyB may inhibit flowering in

Describe the evidence for the existence of both a flowering promoter and a flowering inhibitor.

You expose a plant to a light that shines on the right side of a plant. Which statement best explains why the plant grows toward the light?

Which statement concerning the auxin F-box protein is false ?

Summarize the effects of each of the six classes of plant hormones.

The movement of auxin downward from its site of production is referred to as

Which statement concerning phytochrome-induced responses is false ?

Changing day length, as well as variations in precipitation and temperature, are environmental cues that exert an important influence on

Which of the following statements is true?

Ethylene stimulates the ripening of fruits.

Figure 38-2 ​ Refer to the accompanying figure. What does the photoperiodic response of the plant in Row A suggest?

The site of gravity perception in roots is the root apical meristem.

A View of Life

Atoms and Molecules: the Chemical Basis of Life

The Chemistry of Life: Organic Compounds

Organization of the Cell

Biological Membranes

Cell Communication

Energy and Metabolism

How Cells Make Atp: Energy-Releasing Pathways

Photosynthesis: Capturing Light Energy

Chromosomes, Mitosis, and Meiosis

The Basic Principles of Heredity

DNA: The Carrier of Genetic Information

Gene Expression

Gene Regulation

DNA Technology and Genomics

Human Genetics and the Human Genome

Developmental Genetics

Introduction to Darwinian Evolution

Evolutionary Change in Populations

Speciation and Macroevolution

The Origin and Evolutionary History of Life

The Evolution of Primates

Understanding Diversity: Systematics

Viruses and Subviral Agents

Bacteria and Archaea

Protists

Seedless Plants

Seed Plants

The Fungi

An Introduction to Animal Diversity

Sponges, Cnidarians, Ctenophores, and Protostomes

The Deuterostomes

Plant Structure, Growth, and Development

Leaf Structure and Function

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Animal Structure and Function: an Introduction

Protection, Support, and Movement

Neural Signaling

Neural Regulation

Sensory Systems

Internal Transport

The Immune System: Internal Defense

Gas Exchange

Processing Food and Nutrition

Osmoregulation and Disposal of Metabolic Wastes

Endocrine Regulation

Reproduction

Animal Development

Animal Behavior

Introduction to Ecology: Population Ecology

Community Ecology

Ecosystems and the Biosphere

Ecology and the Geography of Life

Biological Diversity and Conservation Biology

Filters

Figure 38-2 Refer to the accompanying figure. What does the photoperiodic response of the plant in Row A suggest?