Question 1

Sunlight can actually be so intense that photosynthesis can be stopped.

Accepted Answer

A) True 
 B)False

Question 2

Liquids move faster in plant cells by bulk flow than by diffusion.

Accepted Answer

A) True 
 B)False

Question 3

You are part of a team that discovers a new nitrogen-fixing bacteria in symbiosis with a plant.As you study this new bacteria,you discover that it is photosynthetic.This bacteria is likely to be:

Accepted Answer

A)  cyanobacteriA.
B)  actinobacteria.
C)  proteobacteria.
D)  none of the above.E) C) and D)
F) None of the above

Question 4

Which of the following are the water conducting cells of the xylem?

Accepted Answer

A)  Tracheids and parenchyma
B)  Vessels and parenchyma
C)  Sieve tubes and tracheids
D)  Vessels and tracheids
E)  Parenchyma and sieve tubesF) D) and E)
G) B) and E) D

Question 5

Which of the following plant hormones stimulates development of an abscission zone in the leaf petiole?

Accepted Answer

A)  ethanol
B)  gibberellins
C)  abscisic acid
D)  auxin
E)  ethyleneF) A) and C)
G) A) and B)

Question 6

Active transport in plants works against a concentration gradient and this allows for substances to pass through plant cells without an energy input.

Accepted Answer

A) True 
 B)False

Question 7

In phloem,bulk flow occurs from regions of high to low ________ concentration.

Accepted Answer

A)  solute
B)  mineral
C)  water
D)  cytosol
E)  cytoplasmF) B) and C)
G) B) and D)

Question 8

The Casparian strip prevents apoplastic movement through epidermal cells.

Accepted Answer

A) True 
 B)False  False

Question 9

One function of cell walls in plants is to prevent the continual increase in the expansion of the cell membrane.

Accepted Answer

A) True 
 B)False

Question 10

Apoplastic movement of water and minerals is possible until they reach which cell type?

Accepted Answer

A)  Epidermis
B)  Xylem
C)  Cortex cells
D)  Pericycle
E)  EndodermisF) B) and C)
G) C) and D)

Question 11

Cellular items that can NOT be transported through proton channels are:

Accepted Answer

A)  proteins.
B)  nucleotides.
C)  mitochondria.
D)  water.
E)  sugars.F) A) and D)
G) D) and E) C

Question 12

What will happen if you place a turgid cell in a hypertonic solution? A hypotonic solution?

Accepted Answer

A)  Nothing;nothing
B)  It will lose water;nothing
C)  Nothing;it will gain water
D)  It will lose water;it will gain waterE) B) and C)
F) None of the above

Question 13

Chlorosis in plants is a condition best explained by:

Accepted Answer

A)  lack of water.
B)  lack of certain minerals.
C)  lack of oxygen.
D)  lack of carbon dioxide.
E)  lack of soil moisturE.F) B) and E)
G) A) and D)

Question 14

It is possible to manufacture a form of nitrogen that is useable by plants;however,the major drawback to this process is:

Accepted Answer

A)  time involved.
B)  getting enough nitrogen.
C)  cost of converting nitrogen to a useable form.
D)  temperatures must be extremely high.
E)  it is difficult to contain the end product.F) A) and D)
G) B) and E)

Question 15

Which of the following is not a factor used directly in determining water potential of plant cells?

Accepted Answer

A)  Solute outside the cell
B)  Solute inside the cell
C)  Cell turgor pressure
D)  Pressure at the cell wall-membrane interface
E)  TemperatureF) A) and E)
G) B) and E)

Question 16

When SEO gene expression is inactivated in tobacco plants,injured mutant plants exude nine times more sugar than injured wild type plants.What do SEO genes encode?

Accepted Answer

A)  Aquaporins
B)  ABA receptors
C)  P proteins
D)  LigninE) C) and D)
F) B) and C)

Question 17

Which cells in the root have a suberin layer called the Casparian strip?

Accepted Answer

A)  Endodermis
B)  Cortex
C)  Epidermis
D)  Root hairE) A) and B)
F) A) and C)

Question 18

What hormone plays a role in the closing of stomata in response to water stress?

Accepted Answer

A)  Abscisic acid
B)  Cytokinin
C)  Auxin
D)  EthyleneE) A) and B)
F) B) and D)

Question 19

You want to calculate the relative water content of a sapling.You measure the fresh weight to be 11.95g,the turgid weight to be 12.5g,and the dry weight to be 11.5g.What is the RWC of this plant,and is it likely to live or die?

Accepted Answer

A)  55%;live
B)  45%;live
C)  45%;die
D)  55%;die
E)  100%;liveF) A) and E)
G) All of the above

Question 20

Which of the following is NOT part of the pathway that water and dissolved minerals (i.e. ,Fe,K,Mg,etc. ) follow as they move from the soil into a plant to the xylem?

Accepted Answer

A)  Through plasmodesmata
B)  Through phloem
C)  Through apoplastic transport
D)  Through symplastic transport
E)  Between cellsF) C) and E)
G) A) and E)

Exam 29: Flowering Plants: Nutrition and Transport

Sunlight can actually be so intense that photosynthesis can be stopped.

Correct AnswerverifiedShow Answer

Liquids move faster in plant cells by bulk flow than by diffusion.

Correct AnswerverifiedShow Answer

You are part of a team that discovers a new nitrogen-fixing bacteria in symbiosis with a plant.As you study this new bacteria,you discover that it is photosynthetic.This bacteria is likely to be:

Correct AnswerverifiedShow Answer

Which of the following are the water conducting cells of the xylem?

Correct AnswerverifiedD

Which of the following plant hormones stimulates development of an abscission zone in the leaf petiole?

Correct AnswerverifiedShow Answer

Active transport in plants works against a concentration gradient and this allows for substances to pass through plant cells without an energy input.

Correct AnswerverifiedShow Answer

In phloem,bulk flow occurs from regions of high to low ________ concentration.

Correct AnswerverifiedShow Answer

The Casparian strip prevents apoplastic movement through epidermal cells.

Correct AnswerverifiedFalse

One function of cell walls in plants is to prevent the continual increase in the expansion of the cell membrane.

Correct AnswerverifiedShow Answer

Apoplastic movement of water and minerals is possible until they reach which cell type?

Correct AnswerverifiedShow Answer

Cellular items that can NOT be transported through proton channels are:

Correct AnswerverifiedC

What will happen if you place a turgid cell in a hypertonic solution? A hypotonic solution?

Correct AnswerverifiedShow Answer

Chlorosis in plants is a condition best explained by:

Correct AnswerverifiedShow Answer

It is possible to manufacture a form of nitrogen that is useable by plants;however,the major drawback to this process is:

Correct AnswerverifiedShow Answer

Which of the following is not a factor used directly in determining water potential of plant cells?

Correct AnswerverifiedShow Answer

When SEO gene expression is inactivated in tobacco plants,injured mutant plants exude nine times more sugar than injured wild type plants.What do SEO genes encode?

Correct AnswerverifiedShow Answer

Which cells in the root have a suberin layer called the Casparian strip?

Correct AnswerverifiedShow Answer

What hormone plays a role in the closing of stomata in response to water stress?

Correct AnswerverifiedShow Answer

You want to calculate the relative water content of a sapling.You measure the fresh weight to be 11.95g,the turgid weight to be 12.5g,and the dry weight to be 11.5g.What is the RWC of this plant,and is it likely to live or die?

Correct AnswerverifiedShow Answer

Which of the following is NOT part of the pathway that water and dissolved minerals (i.e. ,Fe,K,Mg,etc. ) follow as they move from the soil into a plant to the xylem?

Correct AnswerverifiedShow Answer

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D

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False

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C

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