Question 1

Which of the following is true concerning root nodules?

Accepted Answer

A) They may kill a plant. 
B) They are produced by a fungus. 
C) They remove nitrogen compounds from the plant. 
D) They convert the harmful ammonia that plant cells produce into gaseous nitrogen. 
E) None of these are true. 
A) They may kill a plant. 
B) They are produced by a fungus. 
C) They remove nitrogen compounds from the plant. 
D) They convert the harmful ammonia that plant cells produce into gaseous nitrogen. 
E) None of these are true.

Question 2

The cuticle of a leaf is composed of

Accepted Answer

A) waxes. 
B) pectin. 
C) cellulose. 
D) cutin. 
E) all of these. 
A) waxes. 
B) pectin. 
C) cellulose. 
D) cutin. 
E) all of these.

Question 3

The Army and the Environmental Protection Agency are decreasing the contamination at the Army's Aberdeen Proving Grounds by

Accepted Answer

A) removing contaminated soil. 
B) planting hybrid poplar trees. 
C) chemically degrading the contaminants. 
D) covering the contaminated soil with a sealant. 
E) doing none of these. 
A) removing contaminated soil. 
B) planting hybrid poplar trees. 
C) chemically degrading the contaminants. 
D) covering the contaminated soil with a sealant. 
E) doing none of these.

Question 4

Which of the following is NOT true concerning the root endodermis?

Accepted Answer

A) It regulates the movement of water and minerals into the vascular cylinder. 
B) It contains a water-impermeable waxy strip. 
C) It is a layer of cells surrounding the vascular cylinder. 
D) It forces water to move through its Casparian strip. 
E) It separates the vascular cylinder from the cortex of a root. 
A) It regulates the movement of water and minerals into the vascular cylinder. 
B) It contains a water-impermeable waxy strip. 
C) It is a layer of cells surrounding the vascular cylinder. 
D) It forces water to move through its Casparian strip. 
E) It separates the vascular cylinder from the cortex of a root.

Question 5

Feeding aphids are anesthetized by exposure to __________ in translocation experiments.

Accepted Answer

A) alcohol fumes 
B) carbon dioxide 
C) methane 
D) high levels of oxygen 
E) smoke 
A) alcohol fumes 
B) carbon dioxide 
C) methane 
D) high levels of oxygen 
E) smoke

Question 6

Four of the five processes listed below occur when the stomata are open.Select the exception.

Accepted Answer

A) ATP is used 
B) potassium pump operates 
C) active transport occurs 
D) water is conserved 
E) guard cells swell with water 
A) ATP is used 
B) potassium pump operates 
C) active transport occurs 
D) water is conserved 
E) guard cells swell with water

Question 7

The oxygen needed by plants is ultimately derived from

Accepted Answer

A) aerobic respiration. 
B) photosynthesis. 
C) anaerobic respiration. 
D) glucose. 
E) carbon dioxide. 
A) aerobic respiration. 
B) photosynthesis. 
C) anaerobic respiration. 
D) glucose. 
E) carbon dioxide.

Question 8

The above figure is a photograph of

Accepted Answer

A) a plant with root nodules. 
B) mycorrhizae. 
C) root hairs. 
D) a demonstration of the effect of mutualistic Rhizobium. 
E) a microscopic view of a nodule forming around area where the bacterium infect. 
A) a plant with root nodules. 
B) mycorrhizae. 
C) root hairs. 
D) a demonstration of the effect of mutualistic Rhizobium. 
E) a microscopic view of a nodule forming around area where the bacterium infect.

Question 9

Four of the five structures listed below are sinks for pressure-flow translocation.Select the exception.

Accepted Answer

A) fruits 
B) roots 
C) mature leaves 
D) seeds 
E) rapidly growing tissue 
A) fruits 
B) roots 
C) mature leaves 
D) seeds 
E) rapidly growing tissue

Question 10

Which statement is false?

Accepted Answer

A) The stomata open simply to allow carbon dioxide to enter the leaf, not as a result of environmental conditions. 
B) As carbon dioxide levels drop in guard cells, there is an influx of potassium. 
C) When potassium ions enter guard cells, water moves into the guard cells by osmosis. 
D) At night, in most plants carbon dioxide builds up in guard cells, resulting in the movement of potassium and water out of the guard cells. 
E) When the guard cells shrivel, the stomata are closed. 
A) The stomata open simply to allow carbon dioxide to enter the leaf, not as a result of environmental conditions. 
B) As carbon dioxide levels drop in guard cells, there is an influx of potassium. 
C) When potassium ions enter guard cells, water moves into the guard cells by osmosis. 
D) At night, in most plants carbon dioxide builds up in guard cells, resulting in the movement of potassium and water out of the guard cells. 
E) When the guard cells shrivel, the stomata are closed.

Question 11

In CAM plants, such as cacti,

Accepted Answer

A) the stomata are open both day and night. 
B) the stomata are open during the day to let in carbon dioxide even though they cannot afford to lose the water. 
C) stomata are absent because water loss through them is too great. 
D) stomata open at night. 
E) guard cells are present but operate the reverse of the guard cells of non-CAM plants. 
A) the stomata are open both day and night. 
B) the stomata are open during the day to let in carbon dioxide even though they cannot afford to lose the water. 
C) stomata are absent because water loss through them is too great. 
D) stomata open at night. 
E) guard cells are present but operate the reverse of the guard cells of non-CAM plants.

Question 12

The weight of nitrogen in a plant that has a dry weight of 100 grams is at least __________ grams.

Accepted Answer

A) 50 
B) 25 
C) 10 
D) 5 
E) 0.5 
A) 50 
B) 25 
C) 10 
D) 5 
E) 0.5

Question 13

Which of the following statements is false?

Accepted Answer

A) Transpiration creates tension on water columns in a plant. 
B) Transpiration is the loss of water in gaseous form from a plant. 
C) Osmotic gradients account for the absorption of water by roots. 
D) Transpiration occurs mostly through the cuticle. 
E) Hydrogen bonds account for the cohesiveness of water molecules. 
A) Transpiration creates tension on water columns in a plant. 
B) Transpiration is the loss of water in gaseous form from a plant. 
C) Osmotic gradients account for the absorption of water by roots. 
D) Transpiration occurs mostly through the cuticle. 
E) Hydrogen bonds account for the cohesiveness of water molecules.

Question 14

Drops containing mainly __________ may spatter a car parked under an aphid-infested tree.

Accepted Answer

A) water 
B) sucrose 
C) starch 
D) cellulose 
E) honey 
A) water 
B) sucrose 
C) starch 
D) cellulose 
E) honey

Question 15

Humus includes all of the following EXCEPT

Accepted Answer

A) feces. 
B) dead organisms. 
C) leaf litter. 
D) weathered rock. 
E) decomposing organic matter. 
A) feces. 
B) dead organisms. 
C) leaf litter. 
D) weathered rock. 
E) decomposing organic matter.

Question 16

Four of the five events listed below occur during the day, when water is abundant.Select the exception.

Accepted Answer

A) leaves absorb more carbon dioxide 
B) ions are absorbed by the roots 
C) less oxygen is absorbed by roots 
D) stomata are closed 
E) photosynthesis is efficient 
A) leaves absorb more carbon dioxide 
B) ions are absorbed by the roots 
C) less oxygen is absorbed by roots 
D) stomata are closed 
E) photosynthesis is efficient

Question 17

A side effect of the Army's solution to the contamination problem at its Aberdeen Proving Grounds is

Accepted Answer

A) increased ground-water pollution. 
B) the depletion of most soil nutrients. 
C) the restoration of the soil's normal inhabitants. 
D) increased air pollution. 
E) none of these. 
A) increased ground-water pollution. 
B) the depletion of most soil nutrients. 
C) the restoration of the soil's normal inhabitants. 
D) increased air pollution. 
E) none of these.

Question 18

TCE, a chemical contaminant at the United States Army's Aberdeen Proving Grounds, resulting from the improper disposal of wastes, is harmful because it can

Accepted Answer

A) cause liver damage. 
B) damage lungs. 
C) affect the nervous system. 
D) cause coma and death. 
E) do all of these. 
A) cause liver damage. 
B) damage lungs. 
C) affect the nervous system. 
D) cause coma and death. 
E) do all of these.

Question 19

Transpiration results from

Accepted Answer

A) the polar nature of water molecules. 
B) the drying power of air. 
C) cohesion-tension forces. 
D) photosynthesis. 
E) all of these. 
A) the polar nature of water molecules. 
B) the drying power of air. 
C) cohesion-tension forces. 
D) photosynthesis. 
E) all of these.

Question 20

Which of the following processes does NOT serve to maintain low pressure at the receiving end of sieve tube pipelines?

Accepted Answer

A) sucrose conversion into cell-wall polysaccharides 
B) sucrose conversion into starch in the receiving regions 
C) sucrose conversion to glucose, which is then used in cellular respiration 
D) activity of companion cells 
E) conversion of sucrose to fructose in fruits 
A) sucrose conversion into cell-wall polysaccharides 
B) sucrose conversion into starch in the receiving regions 
C) sucrose conversion to glucose, which is then used in cellular respiration 
D) activity of companion cells 
E) conversion of sucrose to fructose in fruits

Exam 29: Plant Nutrition and Transport

Which of the following is true concerning root nodules?

The cuticle of a leaf is composed of

The Army and the Environmental Protection Agency are decreasing the contamination at the Army's Aberdeen Proving Grounds by

Which of the following is NOT true concerning the root endodermis?

Feeding aphids are anesthetized by exposure to __________ in translocation experiments.

Four of the five processes listed below occur when the stomata are open.Select the exception.

The oxygen needed by plants is ultimately derived from

The above figure is a photograph of

Four of the five structures listed below are sinks for pressure-flow translocation.Select the exception.

Which statement is false?

In CAM plants, such as cacti,

The weight of nitrogen in a plant that has a dry weight of 100 grams is at least __________ grams.

Which of the following statements is false?

Drops containing mainly __________ may spatter a car parked under an aphid-infested tree.

Humus includes all of the following EXCEPT

Four of the five events listed below occur during the day, when water is abundant.Select the exception.

A side effect of the Army's solution to the contamination problem at its Aberdeen Proving Grounds is

TCE, a chemical contaminant at the United States Army's Aberdeen Proving Grounds, resulting from the improper disposal of wastes, is harmful because it can

Transpiration results from

Which of the following processes does NOT serve to maintain low pressure at the receiving end of sieve tube pipelines?

Invitation to Biology

Lifes Chemical Basis

Molecules of Life

Cell Structure and Function

A Closer Look at Cell Membranes

Ground Rules of Metabolism

Where It Startsphotosynthesis

Energy-Releasing Pathways

How Cells Reproduce

Meiosis and Sexual Reproduction

Observing Patterns in Inherited Traits

Chromosomes and Human Inheritance

Dna Structure and Function

From Dna to Protein

Controls Over Genes

Recombinant Dna and Genetic Engineering

The Macroevolutionary Puzzle

Emergence of Evolutionary Thought

Organizing Information About Species

The Origin and Evolution of Life

Viruses and Prokaryotes

Protists the Simplest Eukaryotes

Plants

Fungi

Animals: the Invertebrates

Animal Evolution the Chordates

Human Evolution: a Case Study

Plant Tissues

Plant Reproduction

Plant Growth and Development

Animal Tissues and Organ Systems

Neural Control

Sensory Perception

Endocrine Control

Protection, Support, and Movement

Circulation

Immunity

Respiration

Digestion and Human Nutrition

Maintaining the Internal Environment

Animal Reproductive Systems

Animal Development

Animal Behavior

Population Ecology

Community Structure and Biodiversity

Ecosystems

The Biosphere

Human Impacts on the Biosphere

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