Question 1

The three tissue systems of a mature plant root complete their development in the root zone of

Accepted Answer

A) elongation. 
B) cell division. 
C) differentiation. 
D) vascularization. 
A) elongation. 
B) cell division. 
C) differentiation. 
D) vascularization. C

Question 2

Which of the following is a function of fruits?

Accepted Answer

A) production of food for the developing embryo 
B) pollen dispersal 
C) seed dispersal 
D) attracting pollinators 
A) production of food for the developing embryo 
B) pollen dispersal 
C) seed dispersal 
D) attracting pollinators C

Question 3

What happens to the cotyledons of pea and maize seeds?

Accepted Answer

A) They remain in the soil and decompose. 
B) They form a protective sheath around the developing root system. 
C) They surround the base of the shoot to provide additional strength. 
D) They immediately begin to use the sun's energy in photosynthesis. 
A) They remain in the soil and decompose. 
B) They form a protective sheath around the developing root system. 
C) They surround the base of the shoot to provide additional strength. 
D) They immediately begin to use the sun's energy in photosynthesis. A

Question 4

Which of the following plant cells or tissues help regulate the movement of carbon dioxide into and out of a leaf?

Accepted Answer

A) guard cells 
B) root hairs 
C) sieve tubes 
D) xylem 
A) guard cells 
B) root hairs 
C) sieve tubes 
D) xylem

Question 5

A vascular cambium cell divides to produce an inner and an outer daughter cell. Which of the following represents the probable fate of these cells?

Accepted Answer

A) Both cells continue to divide to produce wood. 
B) The inner cell will differentiate into xylem, and the outer cell will divide again. 
C) The inner cell will differentiate into phloem, and the outer cell will differentiate into xylem. 
D) Both cells will continue to divide without differentiating into specialized cells. 
A) Both cells continue to divide to produce wood. 
B) The inner cell will differentiate into xylem, and the outer cell will divide again. 
C) The inner cell will differentiate into phloem, and the outer cell will differentiate into xylem. 
D) Both cells will continue to divide without differentiating into specialized cells.

Question 6

Which of the following statements is false?

Accepted Answer

A) The ground tissue system of a leaf is called the mesophyll. 
B) Each vein in a leaf is composed of either xylem or phloem, but not both. 
C) The pith of a stem is often important in food storage. 
D) Tissues that are neither dermal nor vascular are known as the ground tissue system. 
A) The ground tissue system of a leaf is called the mesophyll. 
B) Each vein in a leaf is composed of either xylem or phloem, but not both. 
C) The pith of a stem is often important in food storage. 
D) Tissues that are neither dermal nor vascular are known as the ground tissue system.

Question 7

-In which structure will meiosis occur?

Accepted Answer

A) structure A 
B) the petals of the flower 
C) structure C 
D) structure D 
A) structure A 
B) the petals of the flower 
C) structure C 
D) structure D

Question 8

-In the figure above, which structure can change to regulate the amount of CO₂ entering the leaf?

Accepted Answer

A) structure A 
B) structure B 
C) structure C 
D) structure D 
A) structure A 
B) structure B 
C) structure C 
D) structure D

Question 9

A woody plant lives through five years of drought, followed by five years of good growing conditions. The ring of xylem cells formed during the five good years will

Accepted Answer

A) be thicker than those formed during the drought years. 
B) be living, whereas those formed during the drought years will be dead. 
C) be thinner than those formed during the drought years. 
D) conduct a higher ratio of sugar to water than those formed during the drought years. 
A) be thicker than those formed during the drought years. 
B) be living, whereas those formed during the drought years will be dead. 
C) be thinner than those formed during the drought years. 
D) conduct a higher ratio of sugar to water than those formed during the drought years.

Question 10

How does the sperm of an angiosperm reach the egg?

Accepted Answer

A) via the pollen tube that grows from the pollen grain through the carpel tissues to the ovule 
B) via the pollen tube that grows from the ovule to reach the pollen grain on the stigma 
C) usually via an insect, which places sperm in the ovary while probing for nectar 
D) by actively swimming down through the style to the egg 
A) via the pollen tube that grows from the pollen grain through the carpel tissues to the ovule 
B) via the pollen tube that grows from the ovule to reach the pollen grain on the stigma 
C) usually via an insect, which places sperm in the ovary while probing for nectar 
D) by actively swimming down through the style to the egg

Question 11

Which of the following is a characteristic of eudicots?

Accepted Answer

A) parallel leaf venation 
B) vascular bundles scattered throughout the stem 
C) a flower with six petals 
D) a taproot system 
A) parallel leaf venation 
B) vascular bundles scattered throughout the stem 
C) a flower with six petals 
D) a taproot system

Question 12

The chief function of root hairs is to

Accepted Answer

A) decrease the anchoring power of roots. 
B) increase the surface area for absorption of water and minerals. 
C) provide a direct passageway from the soil to the vascular cylinder. 
D) provide a home for symbiotic bacteria. 
A) decrease the anchoring power of roots. 
B) increase the surface area for absorption of water and minerals. 
C) provide a direct passageway from the soil to the vascular cylinder. 
D) provide a home for symbiotic bacteria.

Question 13

Monocot floral parts usually occur in multiples of

Accepted Answer

A) five. 
B) four. 
C) two. 
D) three. 
A) five. 
B) four. 
C) two. 
D) three.

Question 14

What is the node of a plant stem?

Accepted Answer

A) the point of leaf attachment 
B) the point of apical dominance 
C) the area between the shoots and the roots 
D) a small pore where gases are exchanged 
A) the point of leaf attachment 
B) the point of apical dominance 
C) the area between the shoots and the roots 
D) a small pore where gases are exchanged

Question 15

Which of the following cells provide flexible support to the growing parts of plants?

Accepted Answer

A) collenchyma cells 
B) sieve-tube elements 
C) sclerenchyma cells 
D) parenchyma cells 
A) collenchyma cells 
B) sieve-tube elements 
C) sclerenchyma cells 
D) parenchyma cells

Question 16

What is the difference between the heartwood and sapwood of a tree?

Accepted Answer

A) Heartwood contains xylem, and sapwood contains phloem. 
B) Sapwood contains xylem, and heartwood contains phloem. 
C) Heartwood no longer transports water and minerals, and sapwood still conducts xylem sap. 
D) Heartwood contains old phloem that no longer functions, and sapwood contains functioning phloem. 
A) Heartwood contains xylem, and sapwood contains phloem. 
B) Sapwood contains xylem, and heartwood contains phloem. 
C) Heartwood no longer transports water and minerals, and sapwood still conducts xylem sap. 
D) Heartwood contains old phloem that no longer functions, and sapwood contains functioning phloem.

Question 17

-In the figure above, if the leaf is like a solar panel receiving light energy and converting it to another form of energy, structure A is like what part of the solar panel?

Accepted Answer

A) the clear covering that allows sunlight in where it can be converted to another type of energy 
B) the wires leading the transformed energy to the point of energy use or storage 
C) the point of attachment of the solar panel to a rooftop 
D) the cells in the panel that trap light energy 
A) the clear covering that allows sunlight in where it can be converted to another type of energy 
B) the wires leading the transformed energy to the point of energy use or storage 
C) the point of attachment of the solar panel to a rooftop 
D) the cells in the panel that trap light energy

Question 18

-In the figure above, which structures ensure that too much water does not leave the leaf?

Accepted Answer

A) structures A and B 
B) structures B and C 
C) structures C and D 
D) structures D and A 
A) structures A and B 
B) structures B and C 
C) structures C and D 
D) structures D and A

Question 19

Aspen trees are the most widely distributed tree in North America. A forest of many aspen trees, some of which may be tens of thousands of years old, is actually one single clone. Which of the following is likely to be the greatest threat to the long-term survival of aspen forests?

Accepted Answer

A) insects, which may bore holes in the stems of trees 
B) climate change, which alters aspen trees' typical environment from the usual moist and cool to dry and warm 
C) a fungus that is often found associated with roots of some trees in the stand 
D) lack of pollinators 
A) insects, which may bore holes in the stems of trees 
B) climate change, which alters aspen trees' typical environment from the usual moist and cool to dry and warm 
C) a fungus that is often found associated with roots of some trees in the stand 
D) lack of pollinators

Question 20

Which of the following structures is the first to emerge from the germinating seed of a eudicot such as the garden bean?

Accepted Answer

A) the embryonic shoot hook 
B) cotyledons 
C) the embryonic root 
D) the shoot sheath 
A) the embryonic shoot hook 
B) cotyledons 
C) the embryonic root 
D) the shoot sheath

Exam 31: Plant Structure, Growth, and Reproduction

The three tissue systems of a mature plant root complete their development in the root zone of

Which of the following is a function of fruits?

What happens to the cotyledons of pea and maize seeds?

Which of the following plant cells or tissues help regulate the movement of carbon dioxide into and out of a leaf?

A vascular cambium cell divides to produce an inner and an outer daughter cell. Which of the following represents the probable fate of these cells?

Which of the following statements is false?

-In which structure will meiosis occur?

-In the figure above, which structure can change to regulate the amount of CO₂ entering the leaf?

A woody plant lives through five years of drought, followed by five years of good growing conditions. The ring of xylem cells formed during the five good years will

How does the sperm of an angiosperm reach the egg?

Which of the following is a characteristic of eudicots?

The chief function of root hairs is to

Monocot floral parts usually occur in multiples of

What is the node of a plant stem?

Which of the following cells provide flexible support to the growing parts of plants?

What is the difference between the heartwood and sapwood of a tree?

-In the figure above, if the leaf is like a solar panel receiving light energy and converting it to another form of energy, structure A is like what part of the solar panel?

-In the figure above, which structures ensure that too much water does not leave the leaf?

Aspen trees are the most widely distributed tree in North America. A forest of many aspen trees, some of which may be tens of thousands of years old, is actually one single clone. Which of the following is likely to be the greatest threat to the long-term survival of aspen forests?

Which of the following structures is the first to emerge from the germinating seed of a eudicot such as the garden bean?

Biology: Exploring Life

The Chemical Basis of Life

The Molecules of Cells

A Tour of the Cell

The Working Cell

How Cells Harvest Chemical Energy

Photosynthesis: Using Light to Make Food

The Cellular Basis of Reproduction and Inheritance

Patterns of Inheritance

Molecular Biology of the Gene

How Genes Are Controlled

DNA Technology and Genomics

How Populations Evolve

The Origin of Species

Tracing Evolutionary History

Microbial Life: Prokaryotes and Protists

The Evolution of Plant and Fungal Diversity

The Evolution of Invertebrate Diversity

The Evolution of Vertebrate Diversity

Unifying Concepts of Animal Structure and Function

Nutrition and Digestion

Gas Exchange

Circulation

the Immune System

Control of Body Temperature and Water Balance

Hormones and the Endocrine System

Reproduction and Embryonic Development

Nervous Systems

the Senses

How Animals Move

Plant Nutrition and Transport

Control Systems in Plants

the Biosphere: an Introduction to Earths Diverse Environments

Behavioral Adaptations to the Environment

Population Ecology

Communities and Ecosystems

Conservation Biology

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