Question 1

Root hairs are most important to a plant because they

Accepted Answer

A)  anchor a plant in the soil. 
B)  store starches. 
C)  increase the surface area for absorption. 
D)  provide a habitat for nitrogen-fixing bacteria. 
E)  contain xylem tissue. 
A)  anchor a plant in the soil. 
B)  store starches. 
C)  increase the surface area for absorption. 
D)  provide a habitat for nitrogen-fixing bacteria. 
E)  contain xylem tissue.

Question 2

Plants do not have a circulatory system like that of some animals. If a water molecule did "circulate" (that is, go from one point in a plant to another and back in the same day), it would require the activity of

Accepted Answer

A)  only the xylem. 
B)  only the phloem. 
C)  only the endodermis. 
D)  both the xylem and the endodermis. 
E)  both the xylem and the phloem. 
A)  only the xylem. 
B)  only the phloem. 
C)  only the endodermis. 
D)  both the xylem and the endodermis. 
E)  both the xylem and the phloem.

Question 3

Active transport would be least important in the normal functioning of which of the following plant tissue types?

Accepted Answer

A)  leaf transfer cells 
B)  stem tracheary elements 
C)  root endodermal cells 
D)  leaf mesophyll cells 
E)  root sieve-tube elements 
A)  leaf transfer cells 
B)  stem tracheary elements 
C)  root endodermal cells 
D)  leaf mesophyll cells 
E)  root sieve-tube elements

Question 4

Most of the water taken up by a plant is

Accepted Answer

A)  used as a solvent. 
B)  used as a hydrogen source in photosynthesis. 
C)  lost during transpiration. 
D)  converted to CO2. 
E)  used to keep cells turgid. 
A)  used as a solvent. 
B)  used as a hydrogen source in photosynthesis. 
C)  lost during transpiration. 
D)  converted to CO2. 
E)  used to keep cells turgid.

Question 5

Carnivorous plants have evolved mechanisms that trap and digest small animals. The products of this digestion are used to supplement the plant's supply of

Accepted Answer

A)  energy. 
B)  carbohydrates. 
C)  lipids and steroids. 
D)  minerals. 
E)  water. 
A)  energy. 
B)  carbohydrates. 
C)  lipids and steroids. 
D)  minerals. 
E)  water.

Question 6

Which of the following elements is required for the stability of cell walls?

Accepted Answer

A)  zinc 
B)  chlorine 
C)  calcium 
D)  molybdenum 
E)  manganese 
A)  zinc 
B)  chlorine 
C)  calcium 
D)  molybdenum 
E)  manganese

Question 7

For this pair of items, choose the option that best describes their relationship. (a) The amount of nitrogen in a fertilizer marked "15-10-5"
(b) The amount of nitrogen in a fertilizer marked "15-5-5"

Accepted Answer

A)  Item (a) is greater than item (b). 
B)  Item (a) is less than item (b). 
C)  Item (a) is exactly or very approximately equal to item (b). 
D)  Item (a) is unrelated to item (b). 
A)  Item (a) is greater than item (b). 
B)  Item (a) is less than item (b). 
C)  Item (a) is exactly or very approximately equal to item (b). 
D)  Item (a) is unrelated to item (b).

Question 8

Assume that a particular chemical interferes with the establishment and maintenance of proton gradients across the membranes of plant cells. All of the following processes would be directly affected by this chemical except

Accepted Answer

A)  photosynthesis. 
B)  phloem loading. 
C)  xylem transport. 
D)  cellular respiration. 
E)  stomatal opening. 
A)  photosynthesis. 
B)  phloem loading. 
C)  xylem transport. 
D)  cellular respiration. 
E)  stomatal opening.

Question 9

Which of the following is a correct statement about sugar movement in phloem?

Accepted Answer

A)  Diffusion can account for the observed rates of transport. 
B)  Movement can occur both upward and downward in the plant. 
C)  Sugar is translocated from sinks to sources. 
D)  Only phloem cells with nuclei can perform sugar movement. 
E)  Sugar transport does not require energy. 
A)  Diffusion can account for the observed rates of transport. 
B)  Movement can occur both upward and downward in the plant. 
C)  Sugar is translocated from sinks to sources. 
D)  Only phloem cells with nuclei can perform sugar movement. 
E)  Sugar transport does not require energy.

Question 10

What would enhance water uptake by a plant cell?

Accepted Answer

A)  decreasing the Ψ of the surrounding solution 
B)  increasing the pressure exerted by the cell wall 
C)  the loss of solutes from the cell 
D)  increasing the Ψ of the cytoplasm 
E)  positive pressure on the surrounding solution 
A)  decreasing the Ψ of the surrounding solution 
B)  increasing the pressure exerted by the cell wall 
C)  the loss of solutes from the cell 
D)  increasing the Ψ of the cytoplasm 
E)  positive pressure on the surrounding solution

Exam 29: Resource Acquisition, Nutrition, and Transport in Vascular Plants

Root hairs are most important to a plant because they

Plants do not have a circulatory system like that of some animals. If a water molecule did "circulate" (that is, go from one point in a plant to another and back in the same day), it would require the activity of

Active transport would be least important in the normal functioning of which of the following plant tissue types?

Most of the water taken up by a plant is

Carnivorous plants have evolved mechanisms that trap and digest small animals. The products of this digestion are used to supplement the plant's supply of

Which of the following elements is required for the stability of cell walls?

For this pair of items, choose the option that best describes their relationship. (a) The amount of nitrogen in a fertilizer marked "15-10-5" (b) The amount of nitrogen in a fertilizer marked "15-5-5"

Assume that a particular chemical interferes with the establishment and maintenance of proton gradients across the membranes of plant cells. All of the following processes would be directly affected by this chemical except

Which of the following is a correct statement about sugar movement in phloem?

What would enhance water uptake by a plant cell?

Introduction: Evolution and the Foundations of Biology

The Chemical Context of Life

Carbon and the Molecular Diversity of Life

A Tour of the Cell

Membrane Transport and Cell Signaling

An Introduction to Metabolism

Cellular Respiration and Fermentation

Photosynthesis

The Cell Cycle

Meiosis and Sexual Life Cycles

Mendel and the Gene Idea

The Chromosomal Basis of Inheritance

The Molecular Basis of Inheritance

Gene Expression: From Gene to Protein

Regulation of Gene Expression

Development, Stem Cells, and Cancer

Viruses

Genomes and Their Evolution

Descent With Modification

Phylogeny

The Evolution of Populations

The Origin of Species

Broad Patterns of Evolution

Early Life and the Diversification of Prokaryotes

The Origin and Diversification of Eukaryotes

The Colonization of Land by Plants and Fungi

The Rise of Animal Diversity

Plant Structure and Growth

Reproduction and Domestication of Flowering Plants

Plant Responses to Internal and External Signals

Homeostasis and Endocrine Signaling

Animal Nutrition

Circulation and Gas Exchange

The Immune System

Reproduction and Development

Neurons, Synapses, and Signaling

Nervous and Sensory Systems

Motor Mechanisms and Behavior

Population Ecology and the Distribution of Organisms

Species Interactions

Ecosystems and Energy

Global Ecology and Conservation Biology

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