Question 1

Which of the following is the best answer for why plants require nitrogen?

Accepted Answer

A)  To make chlorophyll
B)  To make amino acids and nucleotides
C)  To make cell walls
D)  To make membranesE) A) and D)
F) All of the above

Question 2

Nitrogen is one of the most abundantly applied fertilizers worldwide.

Accepted Answer

A) True 
 B)False

Question 3

When scientists are attempting to breed for increased ability of a plant to utilize carbon dioxide they must consider improvement of:

Accepted Answer

A)  bundle-sheath cells.
B)  mesophyll air spaces.
C)  chlorophyll production.
D)  stress tolerance.E) C) and D)
F) None of the above

Question 4

In tobacco plants,a H+/sugar cotransporter called NtSUT1 is required for sucrose loading into phloem.Levels of NtSUT1 are likely to be highest in what plant tissue?

Accepted Answer

A)  Roots
B)  Flowers
C)  Leaves
D)  SeedsE) All of the above
F) A) and B)

Question 5

Macronutrients are defined as those elements:

Accepted Answer

A)  required in certain relative amounts in the plant.
B)  usually needed,but not always available.
C)  required in relatively large amounts.
D)  only taken up through the soil.E) A) and D)
F) C) and D)

Question 6

Potassium deficiency in plants is most common on light,sandy soils.This is likely because:

Accepted Answer

A)  percolation of water through sandy soils leaches potassium from the soil.
B)  roots grown in sandy soil can't absorb potassium.
C)  potassium ions are too tightly bound to sand particles to be used by plants.
D)  plants grown in sandy soil don't require potassium.E) B) and D)
F) B) and C)

Question 7

Measurement of relative water content (RWC) can be used to predict a plant's:

Accepted Answer

A)  ability to recover from cell collapsing.
B)  ability to recover from the wilted condition.
C)  need for fertilizers.
D)  cold shock.
E)  salt tolerancE.F) A) and B)
G) C) and E)

Question 8

When certain bodies of water develop regions known as "dead zones" it often means that:

Accepted Answer

A)  oxygen has been depleted.
B)  carbon dioxide is not available.
C)  nitrogen has become limited.
D)  phosphorus has killed animals.
E)  plant life no longer can survivE.F) A) and D)
G) B) and D)

Question 9

Which of the following is the advantage that plants in arid habitats experience when they keep their stoma closed during hot daytime hours?

Accepted Answer

A)  It prevents loss of CO2.
B)  It helps to conserve water.
C)  It brings minerals up the plant.
D)  It prevents sugar transport to the guard cells.
E)  It gives plants a needed rest.F) C) and D)
G) A) and E)

Question 10

Which of the following is NOT required for passive transport?

Accepted Answer

A)  Membranes
B)  Concentration gradients
C)  Energy
D)  Molecules
E)  BilayersF) All of the above
G) D) and E)

Question 11

Which of the following is the proper order of cells for water and minerals to travel from the soil into the xylem?

Accepted Answer

A)  Root hair,cortex,epidermis,endodermis
B)  Endodermis,cortex,epidermis,endodermis
C)  Root hair,endodermis,cortex,xylem
D)  Root hair,cortex,endodermis,xylem
E)  Root hair,cortex,endodermis,phloem,xylemF) A) and E)
G) B) and D)

Question 12

Which of the following would you expect to be happening if a plant is showing water stress?

Accepted Answer

A)  Abscisic acid is being transported to the guard cells.
B)  Xylem is no longer functioning to carry water up the plant.
C)  The phloem is transporting abscisic acid upward.
D)  Blue light is influencing the guard cells.
E)  All of these are correct.F) B) and D)
G) B) and C)

Question 13

The water potential of a flaccid cell you are studying is -1.5.What is its solute potential?

Accepted Answer

A)  -1.5
B)  -0.5
C)  1
D)  0.5
E)  1.5F) B) and C)
G) B) and D)

Question 14

Based on the fact that CO2 is often limiting for photosynthesis,what might you conclude about the evolution of photosynthesis?

Accepted Answer

A)  Photosynthesis evolved when environmental concentrations of CO2 were low.
B)  Photosynthesis evolved when environmental concentrations of CO2 were high.
C)  CO2 levels likely did not have a bearing on the evolution of photosynthesis.
D)  Photosynthesis evolved in a greenhouse.E) A) and D)
F) A) and B)

Question 15

The plant cell can move substances into cells using proton pumps that work against a gradient.

Accepted Answer

A) True 
 B)False

Question 16

The cohesion-tension theory explains the role of ________ in long-distance water transport.

Accepted Answer

A)  membranes
B)  transpiration
C)  sap movement
D)  plasmodesmata
E)  surface tensionF) B) and C)
G) A) and E)

Question 17

One difference between sieve-tube cells and vessels is that sieve-tube cells are _______,but vessels are dead.

Accepted Answer

A)  hollow
B)  alive
C)  nucleated
D)  more spherical
E)  placed end to endF) None of the above
G) All of the above

Question 18

Most plants absorb water and minerals from the _______ and transport them through the _______.

Accepted Answer

A)  atmosphere;xylem
B)  atmosphere;phloem
C)  soil;phloem
D)  soil;xylemE) A) and D)
F) A) and C)

Question 19

One of the ways agricultural production of such fruits as tomatoes or cucumbers can be increased significantly is to grow them in:

Accepted Answer

A)  soils rich in magnesium.
B)  soils rich in nitrogen.
C)  greenhouses supplied with extra carbon dioxide.
D)  greenhouses with extra oxygen.
E)  None of these is truE.F) A) and D)
G) B) and E)

Question 20

If you took a species of plant that normally grows on the forest floor and began to grow it in full sunlight,over generations,you may expect the plant's progeny to:

Accepted Answer

A)  grow mostly shade leaves.
B)  produce more chlorophyll.
C)  grow shorter.
D)  grow mostly sun leaves.E) A) and D)
F) A) and C)

Exam 29: Flowering Plants: Nutrition and Transport

The water potential of a flaccid cell you are studying is -1.5.What is its solute potential?

Correct AnswerverifiedShow Answer

When scientists are attempting to breed for increased ability of a plant to utilize carbon dioxide they must consider improvement of:

Correct AnswerverifiedShow Answer

Which of the following is NOT required for passive transport?

Correct AnswerverifiedShow Answer

Measurement of relative water content (RWC) can be used to predict a plant's:

Correct AnswerverifiedShow Answer

Potassium deficiency in plants is most common on light,sandy soils.This is likely because:

Correct AnswerverifiedShow Answer

When certain bodies of water develop regions known as "dead zones" it often means that:

Correct AnswerverifiedShow Answer

Macronutrients are defined as those elements:

Correct AnswerverifiedShow Answer

Which of the following would you expect to be happening if a plant is showing water stress?

Correct AnswerverifiedShow Answer

In tobacco plants,a H+/sugar cotransporter called NtSUT1 is required for sucrose loading into phloem.Levels of NtSUT1 are likely to be highest in what plant tissue?

Correct AnswerverifiedShow Answer

One of the ways agricultural production of such fruits as tomatoes or cucumbers can be increased significantly is to grow them in:

Correct AnswerverifiedShow Answer

The plant cell can move substances into cells using proton pumps that work against a gradient.

Correct AnswerverifiedShow Answer

Which of the following is the proper order of cells for water and minerals to travel from the soil into the xylem?

Correct AnswerverifiedShow Answer

Based on the fact that CO2 is often limiting for photosynthesis,what might you conclude about the evolution of photosynthesis?

Correct AnswerverifiedShow Answer

Nitrogen is one of the most abundantly applied fertilizers worldwide.

Correct AnswerverifiedShow Answer

Which of the following is the advantage that plants in arid habitats experience when they keep their stoma closed during hot daytime hours?

Correct AnswerverifiedShow Answer

Which of the following is the best answer for why plants require nitrogen?

Correct AnswerverifiedShow Answer

Most plants absorb water and minerals from the _______ and transport them through the _______.

Correct AnswerverifiedShow Answer

One difference between sieve-tube cells and vessels is that sieve-tube cells are _______,but vessels are dead.

Correct AnswerverifiedShow Answer

If you took a species of plant that normally grows on the forest floor and began to grow it in full sunlight,over generations,you may expect the plant's progeny to:

Correct AnswerverifiedShow Answer

The cohesion-tension theory explains the role of ________ in long-distance water transport.

Correct AnswerverifiedShow Answer

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In tobacco plants,a H⁺/sugar cotransporter called NtSUT1 is required for sucrose loading into phloem.Levels of NtSUT1 are likely to be highest in what plant tissue?

Correct Answer
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Based on the fact that CO₂ is often limiting for photosynthesis,what might you conclude about the evolution of photosynthesis?

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Most plants absorb water and minerals from the _ and transport them through the _.

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