Question 1

Entry of mineral ions into the xylem is regulated by cells of the cortex.

Accepted Answer

A) True 
 B)False

Question 2

Some scientists predict that the Earth will lose almost all of its topsoil by the middle of the next century.What factors are involved in the erosion of soil?

Accepted Answer

A)  deforestation
B)  desertization
C)  poor farming practices
D)  All of the above factors cause erosion.E) A) and D)
F) A) and B)

Question 3

Phytoremediation is the use of a plants ability to uptake minerals in order to remove pollutants from the environment.

Accepted Answer

A) True 
 B)False

Question 4

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) B) and C)
F) A) and D)

Question 5

Which statement is NOT true about root adaptations in plants?

Accepted Answer

A)  Some plants have very poorly developed roots or none at all.
B)  Fungal mycorrhizae depend on plants for the fungus's supply of water and minerals.
C)  Some plants,including orchids,require the presence of fungal symbionts to survive.
D)  Parasitic plants have root adaptations called haustoria that draw nutrients from the host.
E)  Bacteria of the genus Rhizobium live in root nodules in legumes,producing available nitrogen that the plant uses.F) D) and E)
G) B) and D)

Question 6

What is the main factor that will determine whether or not water can enter the root cells?

Accepted Answer

A)  A lower osmotic pressure in the root tissues than the soil solution
B)  Type of plant cells that are exposed to the water
C)  Volume of water available
D)  A higher osmotic pressure in the root tissues than the soil solutionE) C) and D)
F) B) and C)

Question 7

Which statement is NOT true about stomata?

Accepted Answer

A)  As guard cells become turgid,the stomates open.
B)  There are two guard cells around each stomate.
C)  Guard cells take up potassium ions and water enters the guard cells.
D)  The blue light component of sunlight is a signal that can cause stomata to close.
E)  Stomates open and close on a daily basis,even if kept in the dark,on a circadian rhythm.F) A) and B)
G) B) and E)

Question 8

Which term describes the forcing out of water at the surface of a plant's leaves?

Accepted Answer

A)  water stress
B)  atmospheric pressure
C)  root pressure
D)  guttation
E)  transpirationF) B) and E)
G) A) and B)

Question 9

Evaporation of water through the stomata of leaves is

Accepted Answer

A)  guttation.
B)  respiration.
C)  transpiration.
D)  photosynthesis.E) All of the above
F) A) and B)

Question 10

Researchers discover that guard cells of the lady slipper orchid lack chloroplasts; yet the guard cells regularly open and 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) None of the above
F) All of the above

Question 11

The degree of erosion in the United States is best described by the following statement.

Accepted Answer

A)  There is a set amount of soil that was originally formed and erosion continually removes some of it; therefore we will one day run out of topsoil due to erosion.
B)  Soil forms at generally the same rate as soil erodes,so there is an overall balance just as worldwide precipitation equals evaporation; it is just not evenly spread across the landscape.
C)  Soil is eroding faster than it is being formed on about one-third of all cropland.
D)  Removal of trees helps build up topsoil and prevents erosion.E) A) and B)
F) C) and D)

Question 12

Some plants are not photosynthetic and must depend upon bacteria in their root nodules for nutrients.

Accepted Answer

A) True 
 B)False

Exam 25: Flowering Plants: Nutrition and Transport

Some plants are not photosynthetic and must depend upon bacteria in their root nodules for nutrients.

Correct Answer
verified

Some scientists predict that the Earth will lose almost all of its topsoil by the middle of the next century.What factors are involved in the erosion of soil?

Correct Answer
verified

Researchers discover that guard cells of the lady slipper orchid lack chloroplasts; yet the guard cells regularly open and close.

Correct Answer
verified

Phytoremediation is the use of a plants ability to uptake minerals in order to remove pollutants from the environment.

Correct Answer
verified

Which term describes the forcing out of water at the surface of a plant's leaves?

Correct Answer
verified

Entry of mineral ions into the xylem is regulated by cells of the cortex.

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

Evaporation of water through the stomata of leaves is

Correct Answer
verified

Which statement is NOT true about stomata?

Correct Answer
verified

What is the main factor that will determine whether or not water can enter the root cells?

Correct Answer
verified

Which statement is NOT true about root adaptations in plants?

Correct Answer
verified

The degree of erosion in the United States is best described by the following statement.

Correct Answer
verified

Exam 25: Flowering Plants: Nutrition and Transport

Some plants are not photosynthetic and must depend upon bacteria in their root nodules for nutrients.

Correct AnswerverifiedShow Answer

Some scientists predict that the Earth will lose almost all of its topsoil by the middle of the next century.What factors are involved in the erosion of soil?

Correct AnswerverifiedShow Answer

Researchers discover that guard cells of the lady slipper orchid lack chloroplasts; yet the guard cells regularly open and close.

Correct AnswerverifiedShow Answer

Phytoremediation is the use of a plants ability to uptake minerals in order to remove pollutants from the environment.

Correct AnswerverifiedShow Answer

Which term describes the forcing out of water at the surface of a plant's leaves?

Correct AnswerverifiedShow Answer

Entry of mineral ions into the xylem is regulated by cells of the cortex.

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

Evaporation of water through the stomata of leaves is

Correct AnswerverifiedShow Answer

Which statement is NOT true about stomata?

Correct AnswerverifiedShow Answer

What is the main factor that will determine whether or not water can enter the root cells?

Correct AnswerverifiedShow Answer

Which statement is NOT true about root adaptations in plants?

Correct AnswerverifiedShow Answer

The degree of erosion in the United States is best described by the following statement.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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