Question 1

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 2

Most transpiration occurs through stomata .

Accepted Answer

A) True 
 B)False

Question 3

A spine is a modified branch .

Accepted Answer

A) True 
 B)False

Question 4

If a plant were placed in continual darkness, it would continue to open and close its stomata at approximately the same time each day. This phenomenon is governed by:

Accepted Answer

A)  annual rhythms. 
B)  floral clocks. 
C)  transpiration. 
D)  temporal mechanisms. 
E)  circadian rhythms. 
A)  annual rhythms. 
B)  floral clocks. 
C)  transpiration. 
D)  temporal mechanisms. 
E)  circadian rhythms.

Question 5

Compare the leaf structure of monocots and eudicots.

Accepted Answer

Monocots: Have parallel venation, lack a

Question 6

One benefit of transpiration is that it:

Accepted Answer

A)  concentrates nutrients in plant leaves. 
B)  distributes nutrients throughout the plant. 
C)  moves water from the atmosphere to the plant. 
D)  is responsible for warming plants. 
E)  brings in water from the soil. 
A)  concentrates nutrients in plant leaves. 
B)  distributes nutrients throughout the plant. 
C)  moves water from the atmosphere to the plant. 
D)  is responsible for warming plants. 
E)  brings in water from the soil.

Question 7

Transpiration increases at lower temperatures.

Accepted Answer

A) True 
 B)False

Question 8

Figure 34-1   The type of leaf arrangement in the accompanying figure is characteristic of:

Accepted Answer

A)  ashes. 
B)  maples. 
C)  catalpas. 
D)  beeches. 
E)  buckeyes. 
A)  ashes. 
B)  maples. 
C)  catalpas. 
D)  beeches. 
E)  buckeyes.

Question 9

The process by which water is lost by evaporation from aerial 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 10

Modified leaves that protect meristematic tissue at the tips of woody plants are known as:

Accepted Answer

A)  bulbs. 
B)  bud scales. 
C)  spines. 
D)  tendrils. 
E)  scale scars. 
A)  bulbs. 
B)  bud scales. 
C)  spines. 
D)  tendrils. 
E)  scale scars.

Question 11

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 12

Parallel venation is characteristic of eudicot leaves.

Accepted Answer

A) True 
 B)False

Question 13

The process of photosynthesis involves the conversion of:

Accepted Answer

A)  oxygen and water into sugar. 
B)  sugar into starches and cellulose. 
C)  oxygen and sugar into water. 
D)  carbon dioxide and water into sugar. 
E)  sugar and water into lipids. 
A)  oxygen and water into sugar. 
B)  sugar into starches and cellulose. 
C)  oxygen and sugar into water. 
D)  carbon dioxide and water into sugar. 
E)  sugar and water into lipids.

Question 14

Guttation is the process most responsible for moving water and minerals through the plant.

Accepted Answer

A) True 
 B)False

Question 15

Figure 34-2   Refer to the accompanying figure. The structure labeled with the number ____ is responsible for the transport of dissolved sugars.

Accepted Answer

A)  4 
B)  5 
C)  6 
D)  7 
E)  9 
A)  4 
B)  5 
C)  6 
D)  7 
E)  9

Question 16

Opening and closing of the stomata:

Accepted Answer

A)  occur during prolonged periods of drought. 
B)  occur when there is a high concentration of carbon dioxide in the leaf. 
C)  are under hormonal control. 
D)  are triggered by darkness. 
E)  are controlled by the changes in shape of the companion cells. 
A)  occur during prolonged periods of drought. 
B)  occur when there is a high concentration of carbon dioxide in the leaf. 
C)  are under hormonal control. 
D)  are triggered by darkness. 
E)  are controlled by the changes in shape of the companion cells.

Question 17

Identify three different types of modified leaves and list the function of each.

Accepted Answer

spines: deter herbivores 
tendrils: help

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

Identify and describe: 
A. three different ways in which leaves can be arranged on stems, and list one example for each. 
B. three different venation patterns in leaves and whether each is characteristic of eudicots or monocots.

Accepted Answer

A. 1 alternate arrangement: one leaf per

Question 20

The bundle sheath typically surrounds the larger veins .

Accepted Answer

A) True 
 B)False

Exam 34: Leaf Structure and Function

The primary function of spongy mesophyll is:

Most transpiration occurs through stomata .

A spine is a modified branch .

If a plant were placed in continual darkness, it would continue to open and close its stomata at approximately the same time each day. This phenomenon is governed by:

Compare the leaf structure of monocots and eudicots.

One benefit of transpiration is that it:

Transpiration increases at lower temperatures.

Figure 34-1 The type of leaf arrangement in the accompanying figure is characteristic of:

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

Modified leaves that protect meristematic tissue at the tips of woody plants are known as:

Photosynthesis reduces the leaf's internal concentration of:

Parallel venation is characteristic of eudicot leaves.

The process of photosynthesis involves the conversion of:

Guttation is the process most responsible for moving water and minerals through the plant.

Figure 34-2 Refer to the accompanying figure. The structure labeled with the number ____ is responsible for the transport of dissolved sugars.

Opening and closing of the stomata:

Identify three different types of modified leaves and list the function of each.

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

Identify and describe: A. three different ways in which leaves can be arranged on stems, and list one example for each. B. three different venation patterns in leaves and whether each is characteristic of eudicots or monocots.

The bundle sheath typically surrounds the larger veins .

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