Question 1

________ are openings in the leaves of terrestrial plants that allow for the uptake of CO₂.

Accepted Answer

The answer of ________ are openings in the leaves of...

Question 2

Submerged aquatic plants typically have stomata.

Accepted Answer

A) True 
 B)False

Question 3

An Acacia seedling grown in shade (50% full sun) is expected to have a ________ net assimilation rate (NAR) and a ________ leaf area ratio (LAR) than an Acacia seedling grown in full sun.

Accepted Answer

A)  higher; higher
B)  lower; lower
C)  lower; higher
D)  higher; lowerE) None of the above
F) All of the above

Question 4

Compared with plants growing in sunlight,plants growing in shade tend to have a greater

Accepted Answer

A)  rate of photosynthesis.
B)  specific leaf area.
C)  light compensation point.
D)  light saturation point.E) A) and D)
F) All of the above

Question 5

Some terrestrial plants use bicarbonate (HCO3-)as a carbon source for photosynthesis.

Accepted Answer

A) True 
 B)False

Question 6

The measure used to describe the free energy of water at any point along the soil-plant-atmosphere continuum is called its ________ potential.

Accepted Answer

The answer of The measure used to describe the free...

Question 7

Wind or water flow functions to reduce the size of the boundary layer of leaves.

Accepted Answer

A) True 
 B)False

Question 8

The ability of some plants to tolerate extreme cold is known as ________.

Accepted Answer

The answer of The ability of some plants to tolerate...

Question 9

Why is the SLA higher under shade for both shade-tolerant and shade-intolerant plants?

Accepted Answer

A)  Shade intolerant plants have larger surface areas.
B)  Leaves tend to be thicker in the shade.
C)  Leaves tend to have larger surface areas to absorb more sunlight.
D)  Shade tolerant plants have larger surface areas.E) A) and B)
F) A) and C)

Question 10

Nitrogen is a plant macronutrient.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is an incorrect statement?

Accepted Answer

A)  A large leaf maximizes light interception.
B)  A deeply lobed leaf minimizes heat exchange with the atmosphere.
C)  A thick leaf reduces loss of water via transpiration.
D)  A leaf with a high SLA is generally thin and flexible.E) All of the above
F) A) and B)

Question 12

Plants using the C₄ photosynthetic pathway

Accepted Answer

A)  use rubisco to catalyze the reaction between O₂ and RuBP.
B)  have a lower rate of photosynthesis than plants using the C₃ photosynthetic pathway.
C)  divide photosynthesis between mesophyll and bundle sheath cells.
D)  are mostly trees.E) B) and C)
F) A) and B)

Question 13

Net carbon uptake per unit time by a plant is directly related to

Accepted Answer

A)  the difference between photosynthetic rate and respiration rate.
B)  photosynthetic rate.
C)  respiration rate.
D)  the difference between photosynthetic rate and decomposition rate.E) None of the above
F) All of the above

Question 14

The ultimate source of carbon from which life is constructed is derived from

Accepted Answer

A)  atmospheric carbon dioxide.
B)  respiration.
C)  decomposition.
D)  the consumption of other organisms.E) B) and D)
F) None of the above

Question 15

Plants can reduce water loss by

Accepted Answer

A)  closing their stomata.
B)  growing larger leaves.
C)  growing more slowly.
D)  increasing photosynthesis.E) A) and C)
F) None of the above

Question 16

In tropical regions with distinct wet and dry seasons,plants that drop their leaves at the onset of the dry season are termed drought ________.

Accepted Answer

The answer of In tropical regions with distinct wet and...

Question 17

CAM plants typically live in hot,dry deserts.

Accepted Answer

A) True 
 B)False

Question 18

The force exerted outward on a plant cell wall by the water contained in the cell is called ________ pressure.

Accepted Answer

The answer of The force exerted outward on a plant...

Question 19

A CO₂ gradient between the inside and outside of a leaf is maintained during photosynthesis because

Accepted Answer

A)  energy is expended by the plant to maintain the CO₂ gradient.
B)  the CO₂ concentration outside of the leaf is always increasing.
C)  the CO₂ concentration in the mesophyll is constantly decreasing.
D)  the stomata close whenever more CO₂ is needed.E) A) and D)
F) All of the above

Question 20

Allocation of carbon to roots directly increases both respiration and photosynthesis rates.

Accepted Answer

A) True 
 B)False

Exam 6: Plant Adaptations to the Environment

Plants using the C₄ photosynthetic pathway

Correct AnswerverifiedShow Answer

Why is the SLA higher under shade for both shade-tolerant and shade-intolerant plants?

Correct AnswerverifiedShow Answer

The ultimate source of carbon from which life is constructed is derived from

Correct AnswerverifiedShow Answer

Some terrestrial plants use bicarbonate (HCO3-)as a carbon source for photosynthesis.

Correct AnswerverifiedShow Answer

Allocation of carbon to roots directly increases both respiration and photosynthesis rates.

Correct AnswerverifiedShow Answer

Nitrogen is a plant macronutrient.

Correct AnswerverifiedShow Answer

Plants can reduce water loss by

Correct AnswerverifiedShow Answer

Submerged aquatic plants typically have stomata.

Correct AnswerverifiedShow Answer

Wind or water flow functions to reduce the size of the boundary layer of leaves.

Correct AnswerverifiedShow Answer

The ability of some plants to tolerate extreme cold is known as ________.

Correct AnswerverifiedShow Answer

________ are openings in the leaves of terrestrial plants that allow for the uptake of CO₂.

Correct AnswerverifiedShow Answer

A CO₂ gradient between the inside and outside of a leaf is maintained during photosynthesis because

Correct AnswerverifiedShow Answer

Which of the following is an incorrect statement?

Correct AnswerverifiedShow Answer

The measure used to describe the free energy of water at any point along the soil-plant-atmosphere continuum is called its ________ potential.

Correct AnswerverifiedShow Answer

An Acacia seedling grown in shade (50% full sun) is expected to have a ________ net assimilation rate (NAR) and a ________ leaf area ratio (LAR) than an Acacia seedling grown in full sun.

Correct AnswerverifiedShow Answer

The force exerted outward on a plant cell wall by the water contained in the cell is called ________ pressure.

Correct AnswerverifiedShow Answer

Net carbon uptake per unit time by a plant is directly related to

Correct AnswerverifiedShow Answer

In tropical regions with distinct wet and dry seasons,plants that drop their leaves at the onset of the dry season are termed drought ________.

Correct AnswerverifiedShow Answer

CAM plants typically live in hot,dry deserts.

Correct AnswerverifiedShow Answer

Compared with plants growing in sunlight,plants growing in shade tend to have a greater

Correct AnswerverifiedShow Answer

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An Acacia seedling grown in shade (50% full sun) is expected to have a net assimilation rate (NAR) and a leaf area ratio (LAR) than an Acacia seedling grown in full sun.

Correct Answer
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