Question 1

The area of the angle between the stem and the leaf stalk is referred to as the:

Accepted Answer

A)  axil. 
B)  blade. 
C)  petiole. 
D)  stipule. 
E)  trichome. 
A)  axil. 
B)  blade. 
C)  petiole. 
D)  stipule. 
E)  trichome.

Question 2

Photosynthesis reduces the leaf's internal concentration of:

Accepted Answer

A)  hydrogen. 
B)  carbon dioxide. 
C)  nitrogen. 
D)  oxygen. 
E)  sugars and starches. 
A)  hydrogen. 
B)  carbon dioxide. 
C)  nitrogen. 
D)  oxygen. 
E)  sugars and starches.

Question 3

During the photosynthetic process, __________ diffuses into the leaf, while __________ diffuses out of the leaf.

Accepted Answer

A)  carbon dioxide; oxygen 
B)  oxygen; carbon dioxide 
C)  oxygen; water vapor 
D)  water vapor; carbon dioxide 
E)  water vapor; oxygen 
A)  carbon dioxide; oxygen 
B)  oxygen; carbon dioxide 
C)  oxygen; water vapor 
D)  water vapor; carbon dioxide 
E)  water vapor; oxygen

Question 4

Figure 34-2
Use the figure to answer the corresponding question(s).  
-Mesophyll cells are:

Accepted Answer

A)  arranged tightly together. 
B)  separated by intercellular spaces. 
C)  responsible for the opening and closing of stomata. 
D)  devoid of chloroplasts. 
E)  covered by a waxy cuticle, which they secrete. 
A)  arranged tightly together. 
B)  separated by intercellular spaces. 
C)  responsible for the opening and closing of stomata. 
D)  devoid of chloroplasts. 
E)  covered by a waxy cuticle, which they secrete.

Question 5

In the mechanism of stomatal opening, after light activates proton pumps which of the following happens next?

Accepted Answer

A)  Guard cells change shape. 
B)  Hydrogen ions are actively transported out of guard cells. 
C)  Potassium ions diffuse into guard cells. 
D)  Chloride ions diffuse out of guard cells. 
E)  Water moves by osmosis into guard cells. 
A)  Guard cells change shape. 
B)  Hydrogen ions are actively transported out of guard cells. 
C)  Potassium ions diffuse into guard cells. 
D)  Chloride ions diffuse out of guard cells. 
E)  Water moves by osmosis into guard cells.

Question 6

Parallel venation is characteristic of eudicot leaves.
____________________

Accepted Answer

A) True 
 B)False

Question 7

A leaf without a blade is said to be sessile.
____________________

Accepted Answer

A) True 
 B)False

Question 8

Subsidiary cells are the only epidermal cells that have chloroplasts.
____________________

Accepted Answer

A) True 
 B)False

Question 9

The release of liquid water by leaves when soil moisture is high is known as:

Accepted Answer

A)  vaporization. 
B)  photosynthesis. 
C)  guttation. 
D)  transpiration. 
E)  abscission. 
A)  vaporization. 
B)  photosynthesis. 
C)  guttation. 
D)  transpiration. 
E)  abscission.

Question 10

Leaf abscission:

Accepted Answer

A)  occurs as a response to increased temperatures. 
B)  occurs as a response to dry conditions. 
C)  involves the formation of a tendril at the base of the petiole. 
D)  occurs year-round on deciduous plants. 
E)  does not occur in conifers. 
A)  occurs as a response to increased temperatures. 
B)  occurs as a response to dry conditions. 
C)  involves the formation of a tendril at the base of the petiole. 
D)  occurs year-round on deciduous plants. 
E)  does not occur in conifers.

Question 11

The rate of transpiration increases under all of the following conditions except:

Accepted Answer

A)  increased wind. 
B)  increased humidity. 
C)  increased temperature. 
D)  presence of sunlight. 
E)  an increase in dry air. 
A)  increased wind. 
B)  increased humidity. 
C)  increased temperature. 
D)  presence of sunlight. 
E)  an increase in dry air.

Question 12

Compare the leaf structure of monocots and eudicots.

Accepted Answer

Monocots: Have parallel venation, lack a

Question 13

Red light has a wavelength that is the most effective for triggering stomatal opening.
____________________

Accepted Answer

A) True 
 B)False

Question 14

MATCHING
Indicate whether each of the following characteristics is generally found in monocots or in eudicots.
a.monocots
b.eudicots
-have a petiole

Accepted Answer

The answer of MATCHING
Indicate whether each of the following characteristics...

Question 15

The primary function of spongy mesophyll is:

Accepted Answer

A)  photosynthesis. 
B)  transpiration. 
C)  to allow diffusion of gases. 
D)  transport of substances. 
E)  transport of water. 
A)  photosynthesis. 
B)  transpiration. 
C)  to allow diffusion of gases. 
D)  transport of substances. 
E)  transport of water.

Question 16

The process by which water is lost by evaporation from plant parts is known as:

Accepted Answer

A)  vaporization. 
B)  photosynthesis. 
C)  guttation. 
D)  transpiration. 
E)  abscission. 
A)  vaporization. 
B)  photosynthesis. 
C)  guttation. 
D)  transpiration. 
E)  abscission.

Question 17

Figure 34-1
Use the figure to answer the corresponding question(s).  
-The leaf arrangement illustrated in Figure 34-1 is:

Accepted Answer

A)  pinnate. 
B)  alternate. 
C)  compound. 
D)  whorled. 
E)  parallel. 
A)  pinnate. 
B)  alternate. 
C)  compound. 
D)  whorled. 
E)  parallel.

Question 18

The needles of pines and other conifers are adapted to:

Accepted Answer

A)  conserve water. 
B)  defend against herbivores. 
C)  reduce the effects of intense sunlight. 
D)  reduce the effects of snow and ice. 
E)  reduce the effects of wind. 
A)  conserve water. 
B)  defend against herbivores. 
C)  reduce the effects of intense sunlight. 
D)  reduce the effects of snow and ice. 
E)  reduce the effects of wind.

Question 19

An alternate leaf arrangement is one in which there is one leaf per node.
____________________

Accepted Answer

A) True 
 B)False

Question 20

Figure 34-1
Use the figure to answer the corresponding question(s).  
-The cuticle consists of:

Accepted Answer

A)  cellulose. 
B)  lignin. 
C)  hemicellulose. 
D)  starch. 
E)  cutin. 
A)  cellulose. 
B)  lignin. 
C)  hemicellulose. 
D)  starch. 
E)  cutin.

Exam 34: Leaf Structure and Function

The area of the angle between the stem and the leaf stalk is referred to as the:

Photosynthesis reduces the leaf's internal concentration of:

During the photosynthetic process, __________ diffuses into the leaf, while __________ diffuses out of the leaf.

Figure 34-2 Use the figure to answer the corresponding question(s). -Mesophyll cells are:

In the mechanism of stomatal opening, after light activates proton pumps which of the following happens next?

Parallel venation is characteristic of eudicot leaves. ____________________

A leaf without a blade is said to be sessile. ____________________

Subsidiary cells are the only epidermal cells that have chloroplasts. ____________________

The release of liquid water by leaves when soil moisture is high is known as:

Leaf abscission:

The rate of transpiration increases under all of the following conditions except:

Compare the leaf structure of monocots and eudicots.

Red light has a wavelength that is the most effective for triggering stomatal opening. ____________________

MATCHING Indicate whether each of the following characteristics is generally found in monocots or in eudicots. a.monocots b.eudicots -have a petiole

The primary function of spongy mesophyll is:

The process by which water is lost by evaporation from plant parts is known as:

Figure 34-1 Use the figure to answer the corresponding question(s). -The leaf arrangement illustrated in Figure 34-1 is:

The needles of pines and other conifers are adapted to:

An alternate leaf arrangement is one in which there is one leaf per node. ____________________

Figure 34-1 Use the figure to answer the corresponding question(s). -The cuticle consists of:

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

Stem Structure and Transport

Roots and Mineral Nutrition

Reproduction in Flowering Plants

Plant Developmental Responses to External and Internal Signals

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

During the photosynthetic process, diffuses into the leaf, while diffuses out of the leaf.