Question 1

The Casparian strip is associated with the

Accepted Answer

A) epidermis. 
B) vascular tissue. 
C) cortex. 
D) root hairs. 
E) endodermis. 
A) epidermis. 
B) vascular tissue. 
C) cortex. 
D) root hairs. 
E) endodermis. E

Question 2

Which of the following statements is false?

Accepted Answer

A) Xylem vessels are similar to drinking straws. 
B) The transport of water in xylem is due to positive pressure generated by the root. 
C) The stomata of most plants close at night. 
D) Water is drawn up to the top of a tree by the pull of transpiration. 
E) Plants absorb the majority of needed elements from water and soil. 
A) Xylem vessels are similar to drinking straws. 
B) The transport of water in xylem is due to positive pressure generated by the root. 
C) The stomata of most plants close at night. 
D) Water is drawn up to the top of a tree by the pull of transpiration. 
E) Plants absorb the majority of needed elements from water and soil. B

Question 3

Which of the following does NOT describe the Casparian strip?

Accepted Answer

A) waxy 
B) component of the endodermis 
C) permeable 
D) barrier 
E) waterproof 
A) waxy 
B) component of the endodermis 
C) permeable 
D) barrier 
E) waterproof C

Question 4

A soil with approximately what percent of humus is best for plant growth?

Accepted Answer

A) greater than 90 
B) 15 
C) 50 
D) less than 10 
E) 30 
A) greater than 90 
B) 15 
C) 50 
D) less than 10 
E) 30

Question 5

If a cuticle is removed from a leaf, the leaf will

Accepted Answer

A) be unable to carry on photosynthesis. 
B) be unable to carry on transpiration. 
C) lose water and wilt. 
D) replace the cuticle with a layer of suberin. 
E) immediately close its stomata to prevent water loss. 
A) be unable to carry on photosynthesis. 
B) be unable to carry on transpiration. 
C) lose water and wilt. 
D) replace the cuticle with a layer of suberin. 
E) immediately close its stomata to prevent water loss.

Question 6

Nitrogen-fixing bacteria convert __________ to __________.

Accepted Answer

A) gaseous nitrogen; ammonia 
B) ammonia; gaseous nitrogen 
C) gaseous nitrogen; nitrates 
D) gaseous nitrogen; nitrites 
E) ammonia; nitrates 
A) gaseous nitrogen; ammonia 
B) ammonia; gaseous nitrogen 
C) gaseous nitrogen; nitrates 
D) gaseous nitrogen; nitrites 
E) ammonia; nitrates

Question 7

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) microscopic view of 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) microscopic view of a nodule forming around area where the bacterium infect.

Question 8

Four of the five elements listed below are micronutrients.Select the exception.

Accepted Answer

A) molybdenum 
B) copper 
C) nitrogen 
D) iron 
E) chlorine 
A) molybdenum 
B) copper 
C) nitrogen 
D) iron 
E) chlorine

Question 9

Four of the five processes listed below promote transpiration.Select the exception.

Accepted Answer

A) potassium ions pumped into guard cells 
B) turgor pressure building up in guard cells 
C) photosynthesis occurring in guard cells 
D) carbon dioxide entering leaf 
E) activity of abscisic acid 
A) potassium ions pumped into guard cells 
B) turgor pressure building up in guard cells 
C) photosynthesis occurring in guard cells 
D) carbon dioxide entering leaf 
E) activity of abscisic acid

Question 10

Which of the following is NOT involved in developing the high-pressure characteristic of a source region in plants?

Accepted Answer

A) starch 
B) sucrose 
C) osmosis 
D) water 
E) companion cell 
A) starch 
B) sucrose 
C) osmosis 
D) water 
E) companion cell

Question 11

Leaves falling on the ground initially become a part of soil horizon __________, but will later be a component of soil horizon __________.

Accepted Answer

A) A; B 
B) A; O 
C) O; A 
D) B; A 
E) B; C 
A) A; B 
B) A; O 
C) O; A 
D) B; A 
E) B; C

Question 12

The stomata

Accepted Answer

A) open at night in most plants. 
B) are open when the guard cells are turgid. 
C) close when water moves into the guard cells. 
D) are covered by the cuticle to reduce water loss. 
E) fit all of these descriptions. 
A) open at night in most plants. 
B) are open when the guard cells are turgid. 
C) close when water moves into the guard cells. 
D) are covered by the cuticle to reduce water loss. 
E) fit all of these descriptions.

Question 13

During the day in most plants

Accepted Answer

A) carbon dioxide accumulates in leaf cells. 
B) turgor pressure in the guard cells decreases. 
C) water and potassium move into the guard cells. 
D) the guard cells wilt. 
E) water is conserved. 
A) carbon dioxide accumulates in leaf cells. 
B) turgor pressure in the guard cells decreases. 
C) water and potassium move into the guard cells. 
D) the guard cells wilt. 
E) water is conserved.

Question 14

Guard cells

Accepted Answer

A) surround the stoma. 
B) control the flow of gases between the interior of a leaf and the atmosphere. 
C) become turgid when it becomes light if environmental conditions are not too hot or too dry. 
D) may absorb water from surrounding epidermal cells. 
E) do all of these. 
A) surround the stoma. 
B) control the flow of gases between the interior of a leaf and the atmosphere. 
C) become turgid when it becomes light if environmental conditions are not too hot or too dry. 
D) may absorb water from surrounding epidermal cells. 
E) do all of these.

Question 15

Sieve tubes are different from vessel members because they

Accepted Answer

A) do not have nuclei. 
B) are not connected to each other. 
C) are alive at maturity. 
D) conduct minerals. 
E) fit all of these descriptions. 
A) do not have nuclei. 
B) are not connected to each other. 
C) are alive at maturity. 
D) conduct minerals. 
E) fit all of these descriptions.

Question 16

The most likely result of inhibiting the transport of potassium into the guard cells is that

Accepted Answer

A) the stomata will not be able to close. 
B) water will flow into the cells more freely. 
C) the stomata will close. 
D) the rate of photosynthesis will accelerate. 
E) the production of oxygen will increase. 
A) the stomata will not be able to close. 
B) water will flow into the cells more freely. 
C) the stomata will close. 
D) the rate of photosynthesis will accelerate. 
E) the production of oxygen will increase.

Question 17

Which theory of water transport states that hydrogen bonding allows water molecules to maintain a continuous fluid column as water is pulled from roots to leaves?

Accepted Answer

A) pressure flow 
B) evaporation-condensation 
C) cohesion-tension 
D) osmotic pressure 
E) bulk flow 
A) pressure flow 
B) evaporation-condensation 
C) cohesion-tension 
D) osmotic pressure 
E) bulk flow

Question 18

Which of the following statements is false?

Accepted Answer

A) Root hairs live only a few days 
B) Nodules containing bacteria enable plants to increase their absorption of nitrogen. 
C) The Casparian strip of the endodermis facilitates the movement of water into the vascular cylinder. 
D) Water may travel between the cortex but must move through the cytoplasm of endodermal cells. 
E) Some plants have an exodermis with a Casparian strip. 
A) Root hairs live only a few days 
B) Nodules containing bacteria enable plants to increase their absorption of nitrogen. 
C) The Casparian strip of the endodermis facilitates the movement of water into the vascular cylinder. 
D) Water may travel between the cortex but must move through the cytoplasm of endodermal cells. 
E) Some plants have an exodermis with a Casparian strip.

Question 19

Most of the water exiting from a leaf comes most directly from

Accepted Answer

A) upper epidermal cells. 
B) lower epidermal cells. 
C) mesophyll cells. 
D) xylem tissue. 
E) phloem cells. 
A) upper epidermal cells. 
B) lower epidermal cells. 
C) mesophyll cells. 
D) xylem tissue. 
E) phloem cells.

Question 20

Which of the following are never sink regions for the pressure-flow translocation of organic compounds?

Accepted Answer

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

Exam 29: Plant Nutrition and Transport

The Casparian strip is associated with the

Which of the following statements is false?

Which of the following does NOT describe the Casparian strip?

A soil with approximately what percent of humus is best for plant growth?

If a cuticle is removed from a leaf, the leaf will

Nitrogen-fixing bacteria convert __________ to __________.

The above figure is a photograph of

Four of the five elements listed below are micronutrients.Select the exception.

Four of the five processes listed below promote transpiration.Select the exception.

Which of the following is NOT involved in developing the high-pressure characteristic of a source region in plants?

Leaves falling on the ground initially become a part of soil horizon __________, but will later be a component of soil horizon __________.

The stomata

During the day in most plants

Guard cells

Sieve tubes are different from vessel members because they

The most likely result of inhibiting the transport of potassium into the guard cells is that

Which theory of water transport states that hydrogen bonding allows water molecules to maintain a continuous fluid column as water is pulled from roots to leaves?

Which of the following statements is false?

Most of the water exiting from a leaf comes most directly from

Which of the following are never sink regions for the pressure-flow translocation of organic compounds?

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

Filters

Nitrogen-fixing bacteria convert to .

Leaves falling on the ground initially become a part of soil horizon , but will later be a component of soil horizon .