Question 1

Where are abscisic acid receptors located in plant cells?

Accepted Answer

A) in the cell wall 
B) in the cytoplasm 
C) in the endoplasmic reticulum 
D) in the plasma membrane 
A) in the cell wall 
B) in the cytoplasm 
C) in the endoplasmic reticulum 
D) in the plasma membrane

Question 2

Imagine that you want all of the orange trees in your orchard to uniformly flower and set fruit. Which type of plant hormone should you spray on your plants?

Accepted Answer

A) brassinosteroid 
B) auxins 
C) ethylene 
D) salicylic acid 
A) brassinosteroid 
B) auxins 
C) ethylene 
D) salicylic acid

Question 3

Suppose you are culturing tobacco in a petri dish at a 10:1 ratio of auxin to cytokinin. What would you do in order to promote only shoot development?

Accepted Answer

A) increase the cytokinin ratio 
B) increase the auxin ratio 
C) reduce the auxin level significantly and increase the cytokinin level slightly 
D) grow the tobacco in the dark 
A) increase the cytokinin ratio 
B) increase the auxin ratio 
C) reduce the auxin level significantly and increase the cytokinin level slightly 
D) grow the tobacco in the dark

Question 4

A plant hormone has the same effect in different plant tissues.

Accepted Answer

A) True 
 B)False

Question 5

If you were to start growing roses commercially, where would you probably want to set up your business?

Accepted Answer

Roses are day-neutral plants. They flowe

Question 6

Which of the following terms describes plant activities that follow a biological clock so that they are based on cycles of about 24 hours?

Accepted Answer

A) gravitropisms 
B) photoperiodisms 
C) thigmotropisms 
D) circadian rhythms 
A) gravitropisms 
B) photoperiodisms 
C) thigmotropisms 
D) circadian rhythms

Question 7

Which type of plant hormone is a gas at normal temperature and pressure?

Accepted Answer

A) abscisic acid 
B) ethylene 
C) auxin 
D) salicylic acid 
A) abscisic acid 
B) ethylene 
C) auxin 
D) salicylic acid

Question 8

Which type of plant hormone retards leaf aging?

Accepted Answer

A) salicylic acid 
B) abscisic acid 
C) cytokinin 
D) ethylene 
A) salicylic acid 
B) abscisic acid 
C) cytokinin 
D) ethylene

Question 9

Which type of plant hormone is generally responsible for long-term inhibition of plant growth such as in buds and seeds?

Accepted Answer

A) gibberellin 
B) oligosaccharine 
C) brassinosteroid 
D) abscisic acid 
A) gibberellin 
B) oligosaccharine 
C) brassinosteroid 
D) abscisic acid

Question 10

What is thigmotropism a growth response to?

Accepted Answer

A) light 
B) day length 
C) contact with a solid object 
D) circadian rhythms 
A) light 
B) day length 
C) contact with a solid object 
D) circadian rhythms

Question 11

What are chitinases examples of?

Accepted Answer

A) systemins 
B) phytoalexins 
C) PR proteins 
D) R genes 
A) systemins 
B) phytoalexins 
C) PR proteins 
D) R genes

Question 12

How does the application of gibberellin affect monoecious species of plants (plants that have separate "male" and "female" flowers both on the same plant)?

Accepted Answer

A) It causes all flowers formed to be "female." 
B) It encourages proportionately more "male" flowers to develop. 
C) It causes all flowers formed to actually be both "male" and "female." 
D) It causes all flowers formed to be "male." 
A) It causes all flowers formed to be "female." 
B) It encourages proportionately more "male" flowers to develop. 
C) It causes all flowers formed to actually be both "male" and "female." 
D) It causes all flowers formed to be "male."

Question 13

Which of the following should prevent a grass seedling shoot from bending toward light?

Accepted Answer

A) placing a translucent cap on the shoot tip 
B) placing an opaque cap on the shoot tip 
C) either removing the shoot tip or placing a translucent cap on the shoot tip 
D) either removing the shoot tip or placing an opaque cap on the shoot tip 
A) placing a translucent cap on the shoot tip 
B) placing an opaque cap on the shoot tip 
C) either removing the shoot tip or placing a translucent cap on the shoot tip 
D) either removing the shoot tip or placing an opaque cap on the shoot tip

Question 14

Which plant hormones appear to regulate the expression of genes associated with a plant's growth responses to light?

Accepted Answer

A) salicylic acids 
B) brassinosteroids 
C) gibberellins 
D) jasmonates 
A) salicylic acids 
B) brassinosteroids 
C) gibberellins 
D) jasmonates

Question 15

Which of the following statements best describes the movement of IAA in a shoot tip?

Accepted Answer

A) IAA initially moves laterally from the shoot tip via polar transport. 
B) IAA initially moves laterally from the shaded to illuminated side of the shoot tip. 
C) IAA initially moves laterally from the illuminated to shaded side of the shoot tip. 
D) IAA initially moves laterally from the shoot tip via nonpolar transport. 
A) IAA initially moves laterally from the shoot tip via polar transport. 
B) IAA initially moves laterally from the shaded to illuminated side of the shoot tip. 
C) IAA initially moves laterally from the illuminated to shaded side of the shoot tip. 
D) IAA initially moves laterally from the shoot tip via nonpolar transport.

Question 16

Charles Darwin was the first person to discover the hormone auxin.

Accepted Answer

A) True 
 B)False

Question 17

Choose the type of plant chemical most closely associated with the action given below. Each chemical may be used more than once.
-inducing the synthesis of pathogenesis-related proteins

Accepted Answer

A) jasmonates 
B) salicylic acid 
C) phytoalexins 
D) "antifreeze proteins" 
E) CHOICE BLANK
F)CHOICE BLANK.
G)oligosaccharins 
A) jasmonates 
B) salicylic acid 
C) phytoalexins 
D) "antifreeze proteins" 
E) CHOICE BLANK
F)CHOICE BLANK.
G)oligosaccharins

Question 18

Which plant hormones can be produced by boiling DNA?

Accepted Answer

A) salicylic acids 
B) auxins 
C) cytokinins 
D) abscisic acids 
A) salicylic acids 
B) auxins 
C) cytokinins 
D) abscisic acids

Question 19

Chrysanthemums are short-day plants, requiring a night length of longer than 12 hours to flower. Under which of the following conditions should chrysanthemums flower?

Accepted Answer

A) night length 14 hours, day length 10 hours 
B) night length 10 hours, day length 14 hours 
C) night length 14 hours, day length 10 hours; night interrupted in the middle by an intense red flash 
D) night length 10 hours, day length 14 hours; day interrupted in the middle by half an hour of darkness 
A) night length 14 hours, day length 10 hours 
B) night length 10 hours, day length 14 hours 
C) night length 14 hours, day length 10 hours; night interrupted in the middle by an intense red flash 
D) night length 10 hours, day length 14 hours; day interrupted in the middle by half an hour of darkness

Question 20

Which of the following types of plant hormones is apparently synthesized from carotenoid pigments inside plastids?

Accepted Answer

A) salicylic acid 
B) cytokinins 
C) abscisic acid 
D) jasmonate 
A) salicylic acid 
B) cytokinins 
C) abscisic acid 
D) jasmonate

Exam 38: Plant Signals and Responses to the Environment

Where are abscisic acid receptors located in plant cells?

Imagine that you want all of the orange trees in your orchard to uniformly flower and set fruit. Which type of plant hormone should you spray on your plants?

Suppose you are culturing tobacco in a petri dish at a 10:1 ratio of auxin to cytokinin. What would you do in order to promote only shoot development?

A plant hormone has the same effect in different plant tissues.

If you were to start growing roses commercially, where would you probably want to set up your business?

Which of the following terms describes plant activities that follow a biological clock so that they are based on cycles of about 24 hours?

Which type of plant hormone is a gas at normal temperature and pressure?

Which type of plant hormone retards leaf aging?

Which type of plant hormone is generally responsible for long-term inhibition of plant growth such as in buds and seeds?

What is thigmotropism a growth response to?

What are chitinases examples of?

How does the application of gibberellin affect monoecious species of plants (plants that have separate "male" and "female" flowers both on the same plant)?

Which of the following should prevent a grass seedling shoot from bending toward light?

Which plant hormones appear to regulate the expression of genes associated with a plant's growth responses to light?

Which of the following statements best describes the movement of IAA in a shoot tip?

Charles Darwin was the first person to discover the hormone auxin.

Choose the type of plant chemical most closely associated with the action given below. Each chemical may be used more than once. -inducing the synthesis of pathogenesis-related proteins

Which plant hormones can be produced by boiling DNA?

Chrysanthemums are short-day plants, requiring a night length of longer than 12 hours to flower. Under which of the following conditions should chrysanthemums flower?

Which of the following types of plant hormones is apparently synthesized from carotenoid pigments inside plastids?

Light and Life

The Cell: an Overview

Defining Life and Its Origins

Energy and Enzymes

Cell Membranes and Signalling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Structure and Expression

Control of Gene Expression

Dna Technologies

Genomes and Proteomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Species and Macroevolution

Understanding the History of Life on Earth

Humans and Evolution

Bacteria and Archaea

Viruses, Viroids, and Prions: Infectious Biological Particles

Protists

Fungi

Plants

Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

Diversity of Animals 2: Deuterostomes: Vertebrates and Their Closest Relatives

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Conservation of Biodiversity

Putting Selection to Work

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Introduction to Animal Organization and Physiology

Transport in Animals: the Circulatory System

Reproduction in Animals

Animal Development

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Control

Control of Animal Processes: Neural Integration

Muscles, Skeletons, and Body Movements

Animal Behaviour

Animal Nutrition

Gas Exchange: the Respiratory System

Regulating the Internal Environment

Defences Against Disease

Conservation and Evolutionary Physiology

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