Question 1

In the early growth stages of a seedling, what is responsible for cell enlargement?

Accepted Answer

A) mitosis 
B) cytoplasmic divisions 
C) soil minerals 
D) water uptake 
E) mitosis and cytoplasmic divisions 
A) mitosis 
B) cytoplasmic divisions 
C) soil minerals 
D) water uptake 
E) mitosis and cytoplasmic divisions

Question 2

Root formation in stem cuttings can be improved by the application of

Accepted Answer

A) synthetic auxins. 
B) abscisic acid. 
C) salicylic acid. 
D) citric acid. 
E) nitric acid. 
A) synthetic auxins. 
B) abscisic acid. 
C) salicylic acid. 
D) citric acid. 
E) nitric acid.

Question 3

Which of the following terms refers to the change in relative day length?

Accepted Answer

A) phytoerythrin 
B) phototropism 
C) photorhythmic 
D) photochrome 
E) photoperiodism 
A) phytoerythrin 
B) phototropism 
C) photorhythmic 
D) photochrome 
E) photoperiodism

Question 4

All the processes that lead to the death of a plant or any of its organs are

Accepted Answer

A) dormancy. 
B) vernalization. 
C) abscission. 
D) senescence. 
E) none of these. 
A) dormancy. 
B) vernalization. 
C) abscission. 
D) senescence. 
E) none of these.

Question 5

A signaling molecule that interacts with phytochrome to influence flowering is produced in

Accepted Answer

A) roots. 
B) leaves. 
C) the stem. 
D) flowers. 
E) petioles. 
A) roots. 
B) leaves. 
C) the stem. 
D) flowers. 
E) petioles.

Question 6

Use the figure above to answer questions 
  
-This young seedling

Accepted Answer

A) is a monocot. 
B) is a eudicot. 
C) is a magnoliid. 
D) could be either a monocot or a dicot. 
E) is none of these. 
A) is a monocot. 
B) is a eudicot. 
C) is a magnoliid. 
D) could be either a monocot or a dicot. 
E) is none of these.

Question 7

The gaseous plant hormone is

Accepted Answer

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

Question 8

If peach trees growing in specific mild climates of the southern United States do not receive about 850 hours of temperatures below 40 degrees, they will not produce flowers in the spring.This effect is explained by which of the following terms?

Accepted Answer

A) photoperiodism 
B) phototropism 
C) senescence 
D) vernalization 
E) dormancy 
A) photoperiodism 
B) phototropism 
C) senescence 
D) vernalization 
E) dormancy

Question 9

Photoperiodism is the

Accepted Answer

A) duration of flowering in a plant. 
B) amount of light needed by a plant to exhibit normal growth. 
C) response of a plant to the duration of light and darkness. 
D) light phase of photosynthesis during which photolysis of water occurs. 
E) opposite of photorespiration. 
A) duration of flowering in a plant. 
B) amount of light needed by a plant to exhibit normal growth. 
C) response of a plant to the duration of light and darkness. 
D) light phase of photosynthesis during which photolysis of water occurs. 
E) opposite of photorespiration.

Question 10

Which plant hormone has mostly inhibitory effects?

Accepted Answer

A) auxin 
B) gibberellin 
C) cytokinin 
D) abscisic acid 
E) ethylene 
A) auxin 
B) gibberellin 
C) cytokinin 
D) abscisic acid 
E) ethylene

Question 11

When a cell begins to enlarge after cell division, the primary cell wall

Accepted Answer

A) is rather elastic and can be stretched. 
B) allows water uptake. 
C) becomes thicker due to the addition of polysaccharides. 
D) is rather elastic and can be stretched and allows water uptake. 
E) is rather elastic and can be stretched and becomes thicker due to the addition of polysaccharides. 
A) is rather elastic and can be stretched. 
B) allows water uptake. 
C) becomes thicker due to the addition of polysaccharides. 
D) is rather elastic and can be stretched and allows water uptake. 
E) is rather elastic and can be stretched and becomes thicker due to the addition of polysaccharides.

Question 12

Which of the following is NOT accurate in describing a hormone?

Accepted Answer

A) Hormones produced by a particular species affect only that species. 
B) Only those cells that have specific receptors for a hormone can respond to it. 
C) Hormones in general are produced by one cell and cause their effects in another cell. 
D) Hormones are a type of signaling molecule. 
E) Hormones stimulate or inhibit gene activity. 
A) Hormones produced by a particular species affect only that species. 
B) Only those cells that have specific receptors for a hormone can respond to it. 
C) Hormones in general are produced by one cell and cause their effects in another cell. 
D) Hormones are a type of signaling molecule. 
E) Hormones stimulate or inhibit gene activity.

Question 13

Which of the following matches of plant hormone to agricultural application is INCORRECT?

Accepted Answer

A) abscisic acid; induces dormancy in nursery stock before shipment 
B) ethylene; permits unripe fruit to be shipped without damage for later ripening at distribution centers 
C) synthetic auxins; induce production of seedless fruit 
D) cytokinins; promote root formation in cuttings 
E) gibberellins; increase fruit size 
A) abscisic acid; induces dormancy in nursery stock before shipment 
B) ethylene; permits unripe fruit to be shipped without damage for later ripening at distribution centers 
C) synthetic auxins; induce production of seedless fruit 
D) cytokinins; promote root formation in cuttings 
E) gibberellins; increase fruit size

Question 14

The absence of which of the following pigments prevents a plant from responding to the duration of light and darkness?

Accepted Answer

A) chlorophyll 
B) xanthophyll 
C) carotene 
D) phytochrome 
E) flavoproteins 
A) chlorophyll 
B) xanthophyll 
C) carotene 
D) phytochrome 
E) flavoproteins

Question 15

Which of the following inhibits stem lengthening in plants?

Accepted Answer

A) windswept location 
B) repeated contact by grazing animals 
C) greenhouse growth 
D) mechanical stress 
E) all EXCEPT "greenhouse growth" 
A) windswept location 
B) repeated contact by grazing animals 
C) greenhouse growth 
D) mechanical stress 
E) all EXCEPT "greenhouse growth"

Question 16

Active phytochrome controls

Accepted Answer

A) flowering and seed set. 
B) seed germination. 
C) stem branching and elongation. 
D) expansion of leaves. 
E) all of these. 
A) flowering and seed set. 
B) seed germination. 
C) stem branching and elongation. 
D) expansion of leaves. 
E) all of these.

Question 17

Which of the following is NOT promoted by the active form of phytochrome?

Accepted Answer

A) seed germination 
B) root growth 
C) leaf expansion 
D) stem branching 
E) none of these 
A) seed germination 
B) root growth 
C) leaf expansion 
D) stem branching 
E) none of these

Question 18

Use the figure above to answer questions 
  
-The first portion of the seedling to emerge from the seed coat is indicated by

Accepted Answer

A) A. 
B) B. 
C) C. 
D) one of these, but it is impossible to predict which one. 
E) none of these. 
A) A. 
B) B. 
C) C. 
D) one of these, but it is impossible to predict which one. 
E) none of these.

Question 19

Gibberellins

Accepted Answer

A) were first isolated by a Japanese researcher working with "foolish seedling" rice plants. 
B) were first isolated from a fungus. 
C) are represented by more than 80 different types. 
D) promote stem elongation. 
E) include all of these descriptions. 
A) were first isolated by a Japanese researcher working with "foolish seedling" rice plants. 
B) were first isolated from a fungus. 
C) are represented by more than 80 different types. 
D) promote stem elongation. 
E) include all of these descriptions.

Question 20

Cells that actively divide during germination are called __________ cells.

Accepted Answer

A) parenchyma 
B) meristematic 
C) ground 
D) epidermal 
E) mesophyll 
A) parenchyma 
B) meristematic 
C) ground 
D) epidermal 
E) mesophyll

Exam 31: Plant Growth and Development

In the early growth stages of a seedling, what is responsible for cell enlargement?

Root formation in stem cuttings can be improved by the application of

Which of the following terms refers to the change in relative day length?

All the processes that lead to the death of a plant or any of its organs are

A signaling molecule that interacts with phytochrome to influence flowering is produced in

Use the figure above to answer questions -This young seedling

The gaseous plant hormone is

If peach trees growing in specific mild climates of the southern United States do not receive about 850 hours of temperatures below 40 degrees, they will not produce flowers in the spring.This effect is explained by which of the following terms?

Photoperiodism is the

Which plant hormone has mostly inhibitory effects?

When a cell begins to enlarge after cell division, the primary cell wall

Which of the following is NOT accurate in describing a hormone?

Which of the following matches of plant hormone to agricultural application is INCORRECT?

The absence of which of the following pigments prevents a plant from responding to the duration of light and darkness?

Which of the following inhibits stem lengthening in plants?

Active phytochrome controls

Which of the following is NOT promoted by the active form of phytochrome?

Use the figure above to answer questions -The first portion of the seedling to emerge from the seed coat is indicated by

Gibberellins

Cells that actively divide during germination are called __________ cells.

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Nutrition and Transport

Plant Reproduction

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

Filters