Question 1

The living portion of the pathway through which water travels through a root is called the apoplastic pathway.

Accepted Answer

A) True 
 B)False  False

Question 2

In a living plant cell in a living plant, you would expect the cytoplasm to be ____.

Accepted Answer

A)  much more negatively charged than the fluid outside the cell 
B)  essentially the same charge as the fluid outside the cell 
C)  slightly more positively charged than the fluid outside the cell 
D)  much more positively charged than the fluid outside the cell 
E)  slightly more negatively charged than the fluid outside the cell 
A)  much more negatively charged than the fluid outside the cell 
B)  essentially the same charge as the fluid outside the cell 
C)  slightly more positively charged than the fluid outside the cell 
D)  much more positively charged than the fluid outside the cell 
E)  slightly more negatively charged than the fluid outside the cell E

Question 3

Many plants wind up with a Na+concentration that is considerably lower than that of the surrounding soil. Which of these plays a key role in allowing for such a difference to exist?

Accepted Answer

A)  water potential 
B)  aquaporins 
C)  root cap 
D)  endodermis 
E)  tonoplast 
A)  water potential 
B)  aquaporins 
C)  root cap 
D)  endodermis 
E)  tonoplast D

Question 4

The main form in which sugars are transported in the phloem sap is ____.

Accepted Answer

A)  glucose 
B)  lactose 
C)  starch 
D)  sucrose 
E)  fructose 
A)  glucose 
B)  lactose 
C)  starch 
D)  sucrose 
E)  fructose

Question 5

In phloem movement, ____ does not serve as a source.

Accepted Answer

A)  photosynthesizing cells in a leaf 
B)  roots 
C)  photosynthesizing cells in a stem 
D)  food storage cells in a stem 
E)  soil 
A)  photosynthesizing cells in a leaf 
B)  roots 
C)  photosynthesizing cells in a stem 
D)  food storage cells in a stem 
E)  soil

Question 6

Consider a living plant cell in a living leaf that is not wilted. The solute potential (ψS) of such a cell ____ that in the fluids surrounding the cell.

Accepted Answer

A)  is typically lower than 
B)  varies widely from higher to lower than 
C)  is typically higher than 
D)  is typically about the same as 
E)  is typically less negative than 
A)  is typically lower than 
B)  varies widely from higher to lower than 
C)  is typically higher than 
D)  is typically about the same as 
E)  is typically less negative than

Question 7

A plant stoma is found between two ____.

Accepted Answer

A)  leaves 
B)  root hairs 
C)  xylem veins 
D)  trichomes 
E)  guard cells 
A)  leaves 
B)  root hairs 
C)  xylem veins 
D)  trichomes 
E)  guard cells

Question 8

Explain why a dry, hot, breezy day can result in the leaves of certain plants having to completely replace their water  each hour.

Accepted Answer

The lower the relative humidity, the low

Question 9

The Angel Oak on Johns Island, South Carolina, is estimated to be up to ____ years old.

Accepted Answer

A)  300 
B)  1,000 
C)  1,400 
D)  2,000 
E)  2,400 
A)  300 
B)  1,000 
C)  1,400 
D)  2,000 
E)  2,400

Question 10

Explain what happens when NaCl and other salts build up in soils?

Accepted Answer

The buildup of salts decreases soil wate

Question 11

The most widely accepted and supported model that explains the movement of phloem sap in flowering plants is the ____ mechanism.

Accepted Answer

A)  Cohesion-tension 
B)  translocation 
C)  pressure flow 
D)  osmosis 
E)  transpiration 
A)  Cohesion-tension 
B)  translocation 
C)  pressure flow 
D)  osmosis 
E)  transpiration

Question 12

You would expect essentially no transpiration to occur in conditions of ____.

Accepted Answer

A)  brisk winds 
B)  100 percent relative humidity 
C)  no winds 
D)  one percent relative humidity 
E)  hot air temperature and no winds 
A)  brisk winds 
B)  100 percent relative humidity 
C)  no winds 
D)  one percent relative humidity 
E)  hot air temperature and no winds

Question 13

When a cell contains enough water that the plasma membrane presses tightly against the cell wall, it is said to be ____.

Accepted Answer

A)  palsmolytic 
B)  tight 
C)  wilted 
D)  full 
E)  turgid 
A)  palsmolytic 
B)  tight 
C)  wilted 
D)  full 
E)  turgid

Question 14

Water potential, the inherent capacity of water molecules to move from one site to another when conditions dictate, is typically represented by the Greek letter ____.

Accepted Answer

A)  α 
B)  γ 
C)  ψ 
D)  π 
E)  θ 
A)  α 
B)  γ 
C)  ψ 
D)  π 
E)  θ

Question 15

Which plant organelle stores solutes and plays a major role in maintaining turgor pressure?

Accepted Answer

A)  nucleus 
B)  cell wall 
C)  chloroplast 
D)  vacuole 
E)  mitochondrion 
A)  nucleus 
B)  cell wall 
C)  chloroplast 
D)  vacuole 
E)  mitochondrion

Question 16

Leaves on the lower part of a bush primarily feed the ____.

Accepted Answer

A)  roots 
B)  leaf tips 
C)  stems 
D)  upper leaves 
E)  flowers 
A)  roots 
B)  leaf tips 
C)  stems 
D)  upper leaves 
E)  flowers

Question 17

Over ____ of analytes in plant samples identified from mass spectrometry are classified as "unknown."

Accepted Answer

A)  6% 
B)  16% 
C)  46% 
D)  60% 
E)  96% 
A)  6% 
B)  16% 
C)  46% 
D)  60% 
E)  96%

Question 18

When the protoplast shrinks away from the cell wall, it is called ____.

Accepted Answer

A)  plasmolysis 
B)  tight 
C)  wilted 
D)  turgid 
E)  full 
A)  plasmolysis 
B)  tight 
C)  wilted 
D)  turgid 
E)  full

Question 19

Match between columns
                        Premises: Phloem
Xylem
Upper epidermis
Palisade mesophyll
Spongy mesophyll
Cuticle
Lower epidermis

Accepted Answer

The Answer of D and F and A and G is...

Question 20

The Casparian strip of the endodermis stops water from the ____ before it reaches the stele.

Accepted Answer

A)  symplastic pathway only 
B)  transmembrane and symplastic pathways 
C)  transmembrane pathway only 
D)  apoplastic, transmembrane, and symplastic pathways 
E)  apoplastic pathway only 
A)  symplastic pathway only 
B)  transmembrane and symplastic pathways 
C)  transmembrane pathway only 
D)  apoplastic, transmembrane, and symplastic pathways 
E)  apoplastic pathway only

Exam 34: Transport in Plants

The living portion of the pathway through which water travels through a root is called the apoplastic pathway.

In a living plant cell in a living plant, you would expect the cytoplasm to be ____.

Many plants wind up with a Na+concentration that is considerably lower than that of the surrounding soil. Which of these plays a key role in allowing for such a difference to exist?

The main form in which sugars are transported in the phloem sap is ____.

In phloem movement, ____ does not serve as a source.

Consider a living plant cell in a living leaf that is not wilted. The solute potential (ψS) of such a cell ____ that in the fluids surrounding the cell.

A plant stoma is found between two ____.

Explain why a dry, hot, breezy day can result in the leaves of certain plants having to completely replace their water each hour.

The Angel Oak on Johns Island, South Carolina, is estimated to be up to ____ years old.

Explain what happens when NaCl and other salts build up in soils?

The most widely accepted and supported model that explains the movement of phloem sap in flowering plants is the ____ mechanism.

You would expect essentially no transpiration to occur in conditions of ____.

When a cell contains enough water that the plasma membrane presses tightly against the cell wall, it is said to be ____.

Water potential, the inherent capacity of water molecules to move from one site to another when conditions dictate, is typically represented by the Greek letter ____.

Which plant organelle stores solutes and plays a major role in maintaining turgor pressure?

Leaves on the lower part of a bush primarily feed the ____.

Over ____ of analytes in plant samples identified from mass spectrometry are classified as "unknown."

When the protoplast shrinks away from the cell wall, it is called ____.

The Casparian strip of the endodermis stops water from the ____ before it reaches the stele.

Introduction to Biological Concepts and Research

Life, Chemistry, and Water

Biological Molecules: the Carbon Compounds of Life

Cells

Membranes and Transport

Energy, Enzymes, and Biological Reactions

Cellular Respiration: Harvesting Chemical Energy

Photosynthesis

Cell Communication

Cell Division and Mitosis

Meiosis: the Cellular Basis of Sexual Reproduction

Mendel, Genes, and Inheritance

Genes, Chromosomes, and Human Genetics

Dna Structure, Replication, and Organization

Gene Expression: From Dna to Protein

Regulation of Gene Expression

Bacterial and Viral Genetics

Dna Technology: Making and Using Genetically Altered Organisms, and Other Applications

Genomes and Proteomes

The Development of Evolutionary Thought

Microevolution: Genetic Changes Within Populations

Speciation

Paleobiology and Macroevolution

Systematic Biology: Phylogeny and Classification

The Origin of Life

Prokaryotes and Viruses

Protists

Seedless Plants

Seed Plants

Fungi

Animal Phylogeny, Acoelomates, and Protostomes

Deuterostomes: Vertebrates and Their Closest Relatives

The Plant Body

Plant Nutrition

Reproduction and Development in Flowering Plants

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Information Flow and the Neuron

Nervous Systems

Sensory Systems

The Endocrine System

Muscles, Bones, and Body Movements

The Circulatory System

Defenses Against Disease

Gas Exchange: the Respiratory System

Digestive Systems and Animal Nutrition

Regulating the Internal Environment: Osmoregulation, Excretion, and Thermoregulation

Animal Reproduction

Animal Development

Ecology and the Biosphere

Population Ecology

Population Interactions and Community Ecology

Ecosystems

Biodiversity and Conservation Biology

Animal Behavior

Filters

Many plants wind up with a Na⁺concentration that is considerably lower than that of the surrounding soil. Which of these plays a key role in allowing for such a difference to exist?