Question 1

Gas exchange occurs in woody internodes through the

Accepted Answer

A)  secondary phloem. 
B)  xylem. 
C)  leaves. 
D)  stomates. 
E)  lenticels. 
A)  secondary phloem. 
B)  xylem. 
C)  leaves. 
D)  stomates. 
E)  lenticels.

Question 2

Plasmodesmata passing between two plant cells must travel through

Accepted Answer

A)  the primary cell wall. 
B)  the secondary cell wall. 
C)  the primary cell wall and the secondary cell wall (if present). 
D)  the secondary cell wall and sometimes the primary cell wall. 
E)  the apical-basal axis. 
A)  the primary cell wall. 
B)  the secondary cell wall. 
C)  the primary cell wall and the secondary cell wall (if present). 
D)  the secondary cell wall and sometimes the primary cell wall. 
E)  the apical-basal axis.

Question 3

Which of the following correctly represents the layers of a sclereid cell, from inside to outside?

Accepted Answer

A)  Secondary cell wall F1F1F1S1F1F1F10 primary cell wall F1F1F1S1F1F1F10 middle lamella 
B)  Primary cell wall F1F1F1S1F1F1F10 secondary cell wall F1F1F1S1F1F1F10 middle lamella 
C)  Middle lamella F1F1F1S1F1F1F10 secondary cell wall F1F1F1S1F1F1F10 primary cell wall 
D)  Middle lamella F1F1F1S1F1F1F10 primary cell wall F1F1F1S1F1F1F10 secondary cell wall 
E)  Secondary cell wall F1F1F1S1F1F1F10 middle lamella F1F1F1S1F1F1F10 primary cell wall 
A)  Secondary cell wall F1F1F1S1F1F1F10 primary cell wall F1F1F1S1F1F1F10 middle lamella 
B)  Primary cell wall F1F1F1S1F1F1F10 secondary cell wall F1F1F1S1F1F1F10 middle lamella 
C)  Middle lamella F1F1F1S1F1F1F10 secondary cell wall F1F1F1S1F1F1F10 primary cell wall 
D)  Middle lamella F1F1F1S1F1F1F10 primary cell wall F1F1F1S1F1F1F10 secondary cell wall 
E)  Secondary cell wall F1F1F1S1F1F1F10 middle lamella F1F1F1S1F1F1F10 primary cell wall

Question 4

Which statement about domesticated plants is true?

Accepted Answer

A)  Many useful crops have been derived from a single species. 
B)  The morphological relationship between a wild plant and a crop plant can be determined. 
C)  The difference between a wild plant and a crop plant can be determined by a single gene. 
D)  It is necessary to preserve their seeds to maintain genetic diversity. 
E)  All of the above 
A)  Many useful crops have been derived from a single species. 
B)  The morphological relationship between a wild plant and a crop plant can be determined. 
C)  The difference between a wild plant and a crop plant can be determined by a single gene. 
D)  It is necessary to preserve their seeds to maintain genetic diversity. 
E)  All of the above

Question 5

The large central vacuoles and rigid walls of plant cells

Accepted Answer

A)  conserve energy. 
B)  make the plant less attractive to predators. 
C)  allow the plant to survive temperature extremes. 
D)  protect the plant from desiccation. 
E)  promote growth and provide support of the plant. 
A)  conserve energy. 
B)  make the plant less attractive to predators. 
C)  allow the plant to survive temperature extremes. 
D)  protect the plant from desiccation. 
E)  promote growth and provide support of the plant.

Question 6

You have been given a piece of tree trunk, sawed transversely, and are told to examine its structure.You don't see any growth rings and thus conclude that this tree grew in the tropics.You base this conclusion on the fact that only trees from temperate areas have the rings, which are formed when

Accepted Answer

A)  heartwood cells alternate with sapwood cells. 
B)  resin is deposited in rings in the stem. 
C)  cork is deposited in rings in the stem. 
D)  phelloderm cell size varies with the season. 
E)  xylem cell size varies with the season. 
A)  heartwood cells alternate with sapwood cells. 
B)  resin is deposited in rings in the stem. 
C)  cork is deposited in rings in the stem. 
D)  phelloderm cell size varies with the season. 
E)  xylem cell size varies with the season.

Question 7

Refer to the figure.   In the figure, the large, dead, hollow, elongated cells are _______, part of the vascular tissue system.

Accepted Answer

The answer of Refer to the figure.   In...

Question 8

Root hairs are adaptations that

Accepted Answer

A)  increase surface area. 
B)  defend a plant. 
C)  reduce water loss. 
D)  provide active growth. 
E)  support a plant. 
A)  increase surface area. 
B)  defend a plant. 
C)  reduce water loss. 
D)  provide active growth. 
E)  support a plant.

Question 9

One function of the parenchyma tissue in a plant is

Accepted Answer

A)  photosynthesis. 
B)  to protect the plant. 
C)  to anchor the plant. 
D)  water conduction. 
E)  sugar conduction. 
A)  photosynthesis. 
B)  to protect the plant. 
C)  to anchor the plant. 
D)  water conduction. 
E)  sugar conduction.

Question 10

The most common plant cell type is

Accepted Answer

A)  parenchyma. 
B)  collenchyma. 
C)  sclerenchyma. 
D)  epidermal. 
E)  vascular. 
A)  parenchyma. 
B)  collenchyma. 
C)  sclerenchyma. 
D)  epidermal. 
E)  vascular.

Question 11

The region of cell division in a primary root originates

Accepted Answer

A)  in the root cap. 
B)  in the apical meristem. 
C)  in the region of elongation. 
D)  in the area containing differentiated tissues. 
E)  throughout the root. 
A)  in the root cap. 
B)  in the apical meristem. 
C)  in the region of elongation. 
D)  in the area containing differentiated tissues. 
E)  throughout the root.

Question 12

Which of the following is not a stage of plant embryogenesis?

Accepted Answer

A)  Torpedo 
B)  Globular 
C)  Wrinkle 
D)  Heart 
E)  Cylindrical 
A)  Torpedo 
B)  Globular 
C)  Wrinkle 
D)  Heart 
E)  Cylindrical

Question 13

You are looking at a slide of vascular tissue.You recognize long, spindle-shaped cells with open pits between them.You can be certain that this tissue came from a gymnosperm because it is a _______ in the _______.

Accepted Answer

A)  tracheid; xylem 
B)  vessel element; xylem 
C)  sieve tube element; phloem 
D)  tracheid; phloem 
E)  vessel element; phloem 
A)  tracheid; xylem 
B)  vessel element; xylem 
C)  sieve tube element; phloem 
D)  tracheid; phloem 
E)  vessel element; phloem

Question 14

The _______ is the centermost tissue in a nonwoody eudicot stem.

Accepted Answer

A)  pith 
B)  xylem 
C)  phloem 
D)  pericycle 
E)  endodermis 
A)  pith 
B)  xylem 
C)  phloem 
D)  pericycle 
E)  endodermis

Question 15

The two basic patterns of growth established in the embryo include both the root-shoot axis and the _______ axis of the plant body.

Accepted Answer

A)  tangential 
B)  oblique 
C)  radial 
D)  orbital 
E)  circular 
A)  tangential 
B)  oblique 
C)  radial 
D)  orbital 
E)  circular

Question 16

The barrels and spines of cacti are modified _______ and modified _______, respectively.

Accepted Answer

A)  stems; leaves 
B)  leaves; stems 
C)  stems; flowers 
D)  stems; roots 
E)  roots; leaves 
A)  stems; leaves 
B)  leaves; stems 
C)  stems; flowers 
D)  stems; roots 
E)  roots; leaves

Question 17

The primary function of a typical leaf is

Accepted Answer

A)  absorption. 
B)  food storage. 
C)  support. 
D)  anchoring. 
E)  photosynthesis. 
A)  absorption. 
B)  food storage. 
C)  support. 
D)  anchoring. 
E)  photosynthesis.

Question 18

A fully developed leaf undergoing photosynthesis will produce sugars and serve as a _______, capable of sending sugar to a storage organ.However, a leaf may also be a _______ if it is developing and receiving sugar from a storage organ; the storage organ then would be _______.

Accepted Answer

A)  source; sink; a sink 
B)  sink; source; a sink 
C)  source; sink; both source and sink 
D)  source; sink; a source 
E)  sink; source; a source 
A)  source; sink; a sink 
B)  sink; source; a sink 
C)  source; sink; both source and sink 
D)  source; sink; a source 
E)  sink; source; a source

Question 19

Secondary cell walls are hardened by the addition of _______ to the _______ layers.

Accepted Answer

A)  lignin; pectin 
B)  pectin; cellulose 
C)  cellulose; lignin 
D)  lignin; cellulose 
E)  cellulose; pectin 
A)  lignin; pectin 
B)  pectin; cellulose 
C)  cellulose; lignin 
D)  lignin; cellulose 
E)  cellulose; pectin

Question 20

_______ form at the base of leaf primordia and have the potential to become new apical meristems and initiate new shoots.

Accepted Answer

A)  Shoot apical meristems 
B)  Tracheary elements 
C)  Bud primordia 
D)  Phytomers 
E)  Lateral meristems 
A)  Shoot apical meristems 
B)  Tracheary elements 
C)  Bud primordia 
D)  Phytomers 
E)  Lateral meristems

Exam 33: The Plant Body

Gas exchange occurs in woody internodes through the

Plasmodesmata passing between two plant cells must travel through

Which of the following correctly represents the layers of a sclereid cell, from inside to outside?

Which statement about domesticated plants is true?

The large central vacuoles and rigid walls of plant cells

You have been given a piece of tree trunk, sawed transversely, and are told to examine its structure.You don't see any growth rings and thus conclude that this tree grew in the tropics.You base this conclusion on the fact that only trees from temperate areas have the rings, which are formed when

Refer to the figure. In the figure, the large, dead, hollow, elongated cells are _______, part of the vascular tissue system.

Root hairs are adaptations that

One function of the parenchyma tissue in a plant is

The most common plant cell type is

The region of cell division in a primary root originates

Which of the following is not a stage of plant embryogenesis?

You are looking at a slide of vascular tissue.You recognize long, spindle-shaped cells with open pits between them.You can be certain that this tissue came from a gymnosperm because it is a _______ in the _______.

The _______ is the centermost tissue in a nonwoody eudicot stem.

The two basic patterns of growth established in the embryo include both the root-shoot axis and the _______ axis of the plant body.

The barrels and spines of cacti are modified _______ and modified _______, respectively.

The primary function of a typical leaf is

A fully developed leaf undergoing photosynthesis will produce sugars and serve as a _______, capable of sending sugar to a storage organ.However, a leaf may also be a _______ if it is developing and receiving sugar from a storage organ; the storage organ then would be _______.

Secondary cell walls are hardened by the addition of _______ to the _______ layers.

_______ form at the base of leaf primordia and have the potential to become new apical meristems and initiate new shoots.

Studying Life

Small Molecules and the Chemistry of Life

Proteins, Carbohydrates, and Lipids

Nucleic Acids and the Origin of Life

Cells: the Working Units of Life

Cell Membranes

Cell Communication and Multicellularity

Energy, Enzymes, and Metabolism

Pathways That Harvest Chemical Energy

Photosynthesis: Energy From Sunlight

The Cell Cycle and Cell Division

Inheritance, Genes, and Chromosomes

Dna and Its Role in Heredity

From Dna to Protein: Gene Expression

Gene Mutation and Molecular Medicine

Regulation of Gene Expression

Genomes

Recombinant Dna and Biotechnology

Mechanisms of Evolution

Reconstructing and Using Phylogenies

Speciation

Evolution of Genes and Genomes

The History of Life on Earth

Bacteria, Archaea, and Viruses

The Origin and Diversification of Eukaryotes

Plants Without Seeds: From Water to Land

The Evolution of Seed Plants

The Evolution and Diversity of Fungi

Animal Origins and the Evolution of Body Plans

Protostome Animals

Deuterostome Animals

Transport in Plants

Plant Nutrition

Regulation of Plant Growth

Reproduction in Flowering Plants

Plant Responses to Environmental Challenges

Physiology, Homeostasis, and Temperature Regulation

Animal Hormones

Immunology: Animal Defense Systems

Animal Reproduction

Animal Development

Neurons, Glia, and Nervous Systems

Sensory Systems

The Mammalian Nervous System: Structure and Higher Functions

Musculoskeletal Systems

Gas Exchange

Circulatory Systems

Nutrition, Digestion, and Absorption

Salt and Water Balance and Nitrogen Excretion

Animal Behavior

The Physical Environment and Biogeography of Life

Populations

Species Interactions

Communities

Ecosystems

A Changing Biosphere

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You are looking at a slide of vascular tissue.You recognize long, spindle-shaped cells with open pits between them.You can be certain that this tissue came from a gymnosperm because it is a _ in the _.

The barrels and spines of cacti are modified _ and modified _, respectively.

A fully developed leaf undergoing photosynthesis will produce sugars and serve as a ___, capable of sending sugar to a storage organ.However, a leaf may also be a _ if it is developing and receiving sugar from a storage organ; the storage organ then would be _____.

Secondary cell walls are hardened by the addition of _ to the _ layers.