Question 1

Which of the following hypothesis is supported by the fact that cells of wilting leaves produce abscisic acid, which causes guard cells to close?

Accepted Answer

A)   Supports both Hypothesis I and II.
B)   Supports only Hypothesis I.
C)   Supports only Hypothesis II.
D)   Supports neither hypothesis.E) A) and D)
F) A) and C)

Question 2

The transpiration rate in plants is increased by

Accepted Answer

A)   wind.
B)   elevated temperature.
C)   increased sunlight intensity.
D)   All of the choices increase the rate of transpiration.E) A) and B)
F) None of the above

Question 3

When you have waxed your car, rainfall makes very large droplets that roll around on the hood. This property of the water molecule is known as

Accepted Answer

A)   adhesion.
B)   turgor pressure.
C)   cohesion.
D)   transpiration.
E)   negative pressure potential.F) A) and B)
G) A) and C)

Question 4

Which type of soil is best able to retain calcium and potassium, preventing them from being leached away by runoff?

Accepted Answer

A)   clay
B)   humus
C)   sand
D)   All soils are equal in preventing leaching of minerals.
E)   None of these soils would prevent leaching of minerals.F) C) and D)
G) A) and C)

Question 5

Stomata opening after illumination following eight hours in darkness: plant is Xanthium pennsylvanicum.

Accepted Answer

A)   Supports both Hypothesis I and II.
B)   Supports only Hypothesis I.
C)   Supports only Hypothesis II.
D)   Supports neither hypothesis.E) All of the above
F) None of the above

Question 6

The carbon needed to build organic compounds in plants comes from _______, while the hydrogen and oxygen comes from _________.

Accepted Answer

A)   oxygen in the atmosphere; hydrogen peroxide
B)   carbon dioxide; water
C)   carbohydrates; hydrogen and oxygen gasses in the atmosphere
D)   glucose; hydrochloric acidE) A) and B)
F) None of the above

Question 7

Which hypothesis is supported by the fact that stomates open when exposed to white light, a mixture of all colors of light?

Accepted Answer

A)   Supports both Hypothesis I and II.
B)   Supports only Hypothesis I.
C)   Supports only Hypothesis II.
D)   Supports neither hypothesis.E) B) and D)
F) C) and D)

Question 8

If you cut a herbaceous stem and observe fluids continually seeping upward and out of the cut, it is most likely due to

Accepted Answer

A)   root pressure.
B)   turgor pressure.
C)   active transport by phloem.
D)   tension caused by transpiration.
E)   cohesion to the xylem walls.F) D) and E)
G) C) and D)

Question 9

Rhizobium bacteria live in root nodules and

Accepted Answer

A)   fix atmospheric nitrogen to NH4+ to build organic compounds.
B)   fix carbon dioxide so that the carbon may be used to build glucose.
C)   increase the surface area, thereby increasing the water absorbing capacity of the plant's roots.
D)   All of the answer choices are correct.E) A) and C)
F) B) and C)

Question 10

List the steps associated with the cohesion-tension model of xylem transport.

Accepted Answer

1. Transpiration in the leaves causes wa...

Question 11

Select the correct sequence for mineral uptake in plants.
A. The root cells will initially uptake the minerals.
B. The upwards movement of water will carry the minerals towards the leaves.
C. Some of the minerals are deposited in the leaf cells.
D. The minerals move into the xylem of the vascular tissue.
E. Some of the minerals leave the xylem and enter the various tissues that require them.

Accepted Answer

A)   a - d - b - e - c
B)   a - b - d - e - c
C)   c- a - d - b - e
D)   d - b - e - a - c
E)   d - b - c - a - eF) B) and D)
G) B) and C)

Question 12

Water is forced to enter root endodermal cells by a strip of suberin in the four sides of root endodermal cells called the Casparian strip.

Accepted Answer

A) True 
 B)False

Question 13

Evaporation of water through the stomata of leaves is

Accepted Answer

A)   guttation.
B)   respiration.
C)   transpiration.
D)   photosynthesis.E) None of the above
F) A) and C)

Question 14

Air with varying amounts of CO2, within the ranges found in nature, is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Accepted Answer

A)   Supports both Hypothesis I and II.
B)   Supports only Hypothesis I.
C)   Supports only Hypothesis II.
D)   Supports neither hypothesis.E) C) and D)
F) A) and D)

Question 15

Because most roots need gaseous oxygen as well as liquid water, the best soil for agricultural plants is

Accepted Answer

A)   sand, since it has the greatest pore spaces.
B)   clay, since it holds onto water better than silt or sand.
C)   silt, because it is intermediate between sand and clay in size.
D)   loam, which is a mixture of all size soil particles, and therefore is able to hold water but drain well.
E)   All sizes of soil particles (sand, silt, clay)  are equal in soil properties.F) All of the above
G) A) and D)

Question 16

Stomata allow carbon dioxide into the leaf and water out of the leaf under normal environmental conditions.

Accepted Answer

A) True 
 B)False

Exam 25: Flowering Plants: Nutrition and Transport

The carbon needed to build organic compounds in plants comes from _, while the hydrogen and oxygen comes from ___.

Correct Answer
verified

Which hypothesis is supported by the fact that stomates open when exposed to white light, a mixture of all colors of light?

Correct Answer
verified

When you have waxed your car, rainfall makes very large droplets that roll around on the hood. This property of the water molecule is known as

Correct Answer
verified

Which of the following hypothesis is supported by the fact that cells of wilting leaves produce abscisic acid, which causes guard cells to close?

Correct Answer
verified

List the steps associated with the cohesion-tension model of xylem transport.

Correct Answer
verified
1. Transpiration in the leaves causes wa...
View Answer

If you cut a herbaceous stem and observe fluids continually seeping upward and out of the cut, it is most likely due to

Correct Answer
verified

Rhizobium bacteria live in root nodules and

Correct Answer
verified

Stomata opening after illumination following eight hours in darkness: plant is Xanthium pennsylvanicum.

Correct Answer
verified

Air with varying amounts of CO₂, within the ranges found in nature, is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Correct Answer
verified

The transpiration rate in plants is increased by

Correct Answer
verified

Correct Answer
verified

Which type of soil is best able to retain calcium and potassium, preventing them from being leached away by runoff?

Correct Answer
verified

Evaporation of water through the stomata of leaves is

Correct Answer
verified

Stomata allow carbon dioxide into the leaf and water out of the leaf under normal environmental conditions.

Correct Answer
verified

Water is forced to enter root endodermal cells by a strip of suberin in the four sides of root endodermal cells called the Casparian strip.

Correct Answer
verified

Because most roots need gaseous oxygen as well as liquid water, the best soil for agricultural plants is

Correct Answer
verified

Exam 25: Flowering Plants: Nutrition and Transport

The carbon needed to build organic compounds in plants comes from _______, while the hydrogen and oxygen comes from _________.

Correct AnswerverifiedShow Answer

Which hypothesis is supported by the fact that stomates open when exposed to white light, a mixture of all colors of light?

Correct AnswerverifiedShow Answer

When you have waxed your car, rainfall makes very large droplets that roll around on the hood. This property of the water molecule is known as

Correct AnswerverifiedShow Answer

Which of the following hypothesis is supported by the fact that cells of wilting leaves produce abscisic acid, which causes guard cells to close?

Correct AnswerverifiedShow Answer

List the steps associated with the cohesion-tension model of xylem transport.

Correct Answerverified1. Transpiration in the leaves causes wa...View AnswerShow Answer

If you cut a herbaceous stem and observe fluids continually seeping upward and out of the cut, it is most likely due to

Correct AnswerverifiedShow Answer

Rhizobium bacteria live in root nodules and

Correct AnswerverifiedShow Answer

Stomata opening after illumination following eight hours in darkness: plant is Xanthium pennsylvanicum.

Correct AnswerverifiedShow Answer

Air with varying amounts of CO2, within the ranges found in nature, is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Correct AnswerverifiedShow Answer

The transpiration rate in plants is increased by

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which type of soil is best able to retain calcium and potassium, preventing them from being leached away by runoff?

Correct AnswerverifiedShow Answer

Evaporation of water through the stomata of leaves is

Correct AnswerverifiedShow Answer

Stomata allow carbon dioxide into the leaf and water out of the leaf under normal environmental conditions.

Correct AnswerverifiedShow Answer

Water is forced to enter root endodermal cells by a strip of suberin in the four sides of root endodermal cells called the Casparian strip.

Correct AnswerverifiedShow Answer

Because most roots need gaseous oxygen as well as liquid water, the best soil for agricultural plants is

Correct AnswerverifiedShow Answer

The carbon needed to build organic compounds in plants comes from _, while the hydrogen and oxygen comes from ___.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
1. Transpiration in the leaves causes wa...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Air with varying amounts of CO₂, within the ranges found in nature, is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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