Question 1

The function of the phloem companion cells is to

Accepted Answer

A) assist vessel members to move organic substances. 
B) supply potassium ions for water absorption. 
C) help load organic compounds into neighboring sieve tubes. 
D) store the organic compounds transported by the sieve tubes. 
E) help transport organic compounds when the sieve tubes become overloaded. 
A) assist vessel members to move organic substances. 
B) supply potassium ions for water absorption. 
C) help load organic compounds into neighboring sieve tubes. 
D) store the organic compounds transported by the sieve tubes. 
E) help transport organic compounds when the sieve tubes become overloaded.

Question 2

Plants do not grow well in soils with a lot of clay because these soils

Accepted Answer

A) hold onto and do not release water easily. 
B) are deficient in plant micronutrients and macronutrients. 
C) tend to absorb too much surface water. 
D) tend to become compacted and exclude air. 
E) do none of these. 
A) hold onto and do not release water easily. 
B) are deficient in plant micronutrients and macronutrients. 
C) tend to absorb too much surface water. 
D) tend to become compacted and exclude air. 
E) do none of these.

Question 3

Root hairs are similar to mycorrhizae in that both

Accepted Answer

A) are multicellular. 
B) are extensions of root epidermal cells. 
C) are symbiotic relationships involving root cells. 
D) increase the surface area available for absorption. 
E) fit all of these descriptions. 
A) are multicellular. 
B) are extensions of root epidermal cells. 
C) are symbiotic relationships involving root cells. 
D) increase the surface area available for absorption. 
E) fit all of these descriptions.

Question 4

Movement of soluble organic material through sieve tube members occurs through

Accepted Answer

A) translocation. 
B) active transport. 
C) cohesion-tension. 
D) transpiration. 
E) facilitated transport. 
A) translocation. 
B) active transport. 
C) cohesion-tension. 
D) transpiration. 
E) facilitated transport.

Question 5

Four of the five choices listed below are involved directly in water movement through plants.Select the exception.

Accepted Answer

A) negative pressure 
B) transpiration 
C) cohesion-tension 
D) tension in xylem 
E) photosynthesis 
A) negative pressure 
B) transpiration 
C) cohesion-tension 
D) tension in xylem 
E) photosynthesis

Question 6

Four of the five processes listed below cause stomata to open.Select the exception.

Accepted Answer

A) activity of abscisic acid 
B) potassium ions building up in guard cells 
C) water moving from epidermal cells to guard cells 
D) turgor pressure increasing in guard cells 
E) guard cells carrying on photosynthesis 
A) activity of abscisic acid 
B) potassium ions building up in guard cells 
C) water moving from epidermal cells to guard cells 
D) turgor pressure increasing in guard cells 
E) guard cells carrying on photosynthesis

Question 7

Most of the water moving through a plant is lost through

Accepted Answer

A) osmotic gradients in the soil. 
B) transpiration. 
C) pressure flow forces in the xylem. 
D) photolysis. 
E) photosynthesis. 
A) osmotic gradients in the soil. 
B) transpiration. 
C) pressure flow forces in the xylem. 
D) photolysis. 
E) photosynthesis.

Question 8

The ability of alpine pennycress to decontaminate soil may be transferable to other plants because basically this ability is due to

Accepted Answer

A) the structure of its chloroplasts. 
B) the structure of its membranes. 
C) the structure of its central vacuole. 
D) the structure of its plastids. 
E) a gene. 
A) the structure of its chloroplasts. 
B) the structure of its membranes. 
C) the structure of its central vacuole. 
D) the structure of its plastids. 
E) a gene.

Question 9

In general, plants require how many elements for their growth, development, and survival?

Accepted Answer

A) 6 
B) 12 
C) 16 
D) 22 
E) 28 
A) 6 
B) 12 
C) 16 
D) 22 
E) 28

Question 10

Carbohydrates converted to __________ are __________ in plants.

Accepted Answer

A) cellulose; stored 
B) starch; stored 
C) starch; transported 
D) fats; stored 
E) glucose; transported 
A) cellulose; stored 
B) starch; stored 
C) starch; transported 
D) fats; stored 
E) glucose; transported

Question 11

The above figure is a photograph of

Accepted Answer

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

Question 12

Which of the following factors do leaching and soil erosion have in common?

Accepted Answer

A) strong winds 
B) mineral composition of soil 
C) moving water 
D) climate 
E) none of these 
A) strong winds 
B) mineral composition of soil 
C) moving water 
D) climate 
E) none of these

Question 13

Loams are soils with the best water and oxygen penetration because they have

Accepted Answer

A) a high proportion of sand. 
B) a high proportion of silt. 
C) a high proportion of clay. 
D) high proportions of sand and silt and a low proportion of clay. 
E) equal proportions of sand, silt, and clay. 
A) a high proportion of sand. 
B) a high proportion of silt. 
C) a high proportion of clay. 
D) high proportions of sand and silt and a low proportion of clay. 
E) equal proportions of sand, silt, and clay.

Question 14

The guard cells that surround stomata are specialized

Accepted Answer

A) endodermal cells. 
B) parenchyma cells. 
C) mesophyll cells. 
D) collenchyma cells. 
E) cortex cells. 
A) endodermal cells. 
B) parenchyma cells. 
C) mesophyll cells. 
D) collenchyma cells. 
E) cortex cells.

Question 15

Carbon dioxide enters the plant

Accepted Answer

A) at night in most plants. 
B) when transpiration stops. 
C) when the guard cells lose water and the stomata open. 
D) when potassium ions leave the guard cells. 
E) when the guard cells are stimulated by light. 
A) at night in most plants. 
B) when transpiration stops. 
C) when the guard cells lose water and the stomata open. 
D) when potassium ions leave the guard cells. 
E) when the guard cells are stimulated by light.

Question 16

Which of the following factors influence the opening and closing of the stomata?

Accepted Answer

A) rate of photosynthesis 
B) water availability 
C) concentration of carbon dioxide in the leaf 
D) light availability 
E) all of these 
A) rate of photosynthesis 
B) water availability 
C) concentration of carbon dioxide in the leaf 
D) light availability 
E) all of these

Question 17

About what percent of all the water moving into a leaf is stored or used in metabolism?

Accepted Answer

A) 0 
B) 2 
C) 10 
D) 70 
E) 90 
A) 0 
B) 2 
C) 10 
D) 70 
E) 90

Question 18

Experiments with __________ revealed that __________ is the main carbohydrate that is transported in phloem.

Accepted Answer

A) bees; sucrose 
B) aphids; starch 
C) bees; starch 
D) ants; sucrose 
E) aphids; sucrose 
A) bees; sucrose 
B) aphids; starch 
C) bees; starch 
D) ants; sucrose 
E) aphids; sucrose

Question 19

The cuticle

Accepted Answer

A) conserves water. 
B) reduces absorption of carbon dioxide by the plant. 
C) relegates transpiration to the stomata. 
D) helps prevent wilting. 
E) does all of these. 
A) conserves water. 
B) reduces absorption of carbon dioxide by the plant. 
C) relegates transpiration to the stomata. 
D) helps prevent wilting. 
E) does all of these.

Question 20

Water absorption depends primarily on

Accepted Answer

A) abscisic acid. 
B) cohesion-tension. 
C) the concentration gradient between soil and root. 
D) active transport. 
E) the potassium pump. 
A) abscisic acid. 
B) cohesion-tension. 
C) the concentration gradient between soil and root. 
D) active transport. 
E) the potassium pump.

Exam 29: Plant Nutrition and Transport

The function of the phloem companion cells is to

Plants do not grow well in soils with a lot of clay because these soils

Root hairs are similar to mycorrhizae in that both

Movement of soluble organic material through sieve tube members occurs through

Four of the five choices listed below are involved directly in water movement through plants.Select the exception.

Four of the five processes listed below cause stomata to open.Select the exception.

Most of the water moving through a plant is lost through

The ability of alpine pennycress to decontaminate soil may be transferable to other plants because basically this ability is due to

In general, plants require how many elements for their growth, development, and survival?

Carbohydrates converted to __________ are __________ in plants.

The above figure is a photograph of

Which of the following factors do leaching and soil erosion have in common?

Loams are soils with the best water and oxygen penetration because they have

The guard cells that surround stomata are specialized

Carbon dioxide enters the plant

Which of the following factors influence the opening and closing of the stomata?

About what percent of all the water moving into a leaf is stored or used in metabolism?

Experiments with __________ revealed that __________ is the main carbohydrate that is transported in phloem.

The cuticle

Water absorption depends primarily on

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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Carbohydrates converted to are in plants.

Experiments with revealed that is the main carbohydrate that is transported in phloem.