Question 1

Most plants prevent nighttime transpiration by keeping their stomata closed,but because cacti open their stomata at night,transpiration can occur at that time.

Accepted Answer

A) True 
 B)False  True

Question 2

Carnivorous plants like Sarracenia purpurea are which of the following?

Accepted Answer

A)  producers 
B)  consumers 
C)  producers and detritivores 
D)  producers and consumers 
E)  detritivores 
A)  producers 
B)  consumers 
C)  producers and detritivores 
D)  producers and consumers 
E)  detritivores D

Question 3

Figuer:   
-How would a noncarnivorous plant obtain nutrients like nitrogen and phosphorus?

Accepted Answer

A)  from animals through its pitcher 
B)  from the rain through its leaves 
C)  from the soil through its roots 
D)  from the air through its leaves 
E)  from the sun through photosynthesis 
A)  from animals through its pitcher 
B)  from the rain through its leaves 
C)  from the soil through its roots 
D)  from the air through its leaves 
E)  from the sun through photosynthesis C

Question 4

What can you conclude about the grass in your lawn if the recommended fertilizer has an N-P-K ratio of 29-3-4?

Accepted Answer

A)  It has a taproot. 
B)  It is not a legume. 
C)  It is parasitic. 
D)  It needs a lot of water. 
E)  P and K are not essential nutrients. 
A)  It has a taproot. 
B)  It is not a legume. 
C)  It is parasitic. 
D)  It needs a lot of water. 
E)  P and K are not essential nutrients.

Question 5

The waxy _____ ensures that all of the water coming into a root moves into the xylem.

Accepted Answer

A)  cuticle 
B)  epidermis 
C)  Casparian strip 
D)  sieve tubes 
E)  companion cells 
A)  cuticle 
B)  epidermis 
C)  Casparian strip 
D)  sieve tubes 
E)  companion cells

Question 6

The part of a plant's roots that forces water to enter cells and move into the xylem is the Casparian strip.

Accepted Answer

A) True 
 B)False

Question 7

Soybeans will have several hundred Rhizobium nodules per plant and may divert 20-30 percent of its energy generated by photosynthesis to the nodule instead of to other plant functions when the nodule is actively fixing nitrogen.Why would the plant divert so much energy to Rhizobium?

Accepted Answer

A)  Rhizobium protects the plants from parasites. 
B)  Rhizobium protects the plants from predators. 
C)  Rhizobium produces NH4. 
D)  Rhizobium produces N2. 
E)  Rhizobium produces sugars. 
A)  Rhizobium protects the plants from parasites. 
B)  Rhizobium protects the plants from predators. 
C)  Rhizobium produces NH4. 
D)  Rhizobium produces N2. 
E)  Rhizobium produces sugars.

Question 8

"K" is the elemental symbol for

Accepted Answer

A)  copper. 
B)  krypton. 
C)  phosphorus. 
D)  potassium. 
E)  nickel. 
A)  copper. 
B)  krypton. 
C)  phosphorus. 
D)  potassium. 
E)  nickel.

Question 9

Which of the following is not a legume?

Accepted Answer

A)  alfalfa 
B)  soybeans 
C)  beans 
D)  corn 
E)  peas 
A)  alfalfa 
B)  soybeans 
C)  beans 
D)  corn 
E)  peas

Question 10

A typical,mature tree consumes only about 5 gallons of water a day.

Accepted Answer

A) True 
 B)False

Question 11

Figuer:   
-A normal pitcher has a narrow keel and a wide pitcher opening,maximizing the potential for trapping prey.On the other hand,a leaf optimized for photosynthesis has a wide keel and a small pitcher opening.Based on this observation and the figure,what conclusion can be drawn?

Accepted Answer

A)  high nitrogen correlated with increased trapping ability 
B)  high phosphorus correlated with increased photosynthetic ability 
C)  high nitrogen correlated with increased photosynthetic ability 
D)  high phosphorus correlated with increased trapping ability 
A)  high nitrogen correlated with increased trapping ability 
B)  high phosphorus correlated with increased photosynthetic ability 
C)  high nitrogen correlated with increased photosynthetic ability 
D)  high phosphorus correlated with increased trapping ability

Question 12

In which of the situations below would a plant be at greatest risk for the formation of air bubbles in the xylem stream?

Accepted Answer

A)  in the early morning, with cooler temperatures and calm winds 
B)  only on a day during a drought 
C)  The risk is the same at any time of day. 
D)  during the afternoon, when transpiration is highest 
E)  during the night, when transpiration is low 
A)  in the early morning, with cooler temperatures and calm winds 
B)  only on a day during a drought 
C)  The risk is the same at any time of day. 
D)  during the afternoon, when transpiration is highest 
E)  during the night, when transpiration is low

Question 13

Farmers often use organic matter,such as manure,compost,or even crop residue from previous harvests,with the advantage of

Accepted Answer

A)  increasing the water-holding capacity of the soil. 
B)  All of the answer choices are correct. 
C)  providing food for beneficial soil microorganisms. 
D)  aerating the soil. 
E)  improving fertility of the soil. 
A)  increasing the water-holding capacity of the soil. 
B)  All of the answer choices are correct. 
C)  providing food for beneficial soil microorganisms. 
D)  aerating the soil. 
E)  improving fertility of the soil.

Question 14

In the pressure flow theory,any part of a plant that does not carry out photosynthesis is a

Accepted Answer

A)  aqueduct. 
B)  reservoir. 
C)  companion cell. 
D)  source. 
E)  sink. 
A)  aqueduct. 
B)  reservoir. 
C)  companion cell. 
D)  source. 
E)  sink.

Question 15

The carnivorous plant having two-sided leaves,each with highly sensitive trigger hairs for snapping shut on small animals is the

Accepted Answer

A)  club moss. 
B)  sundew plant. 
C)  pitcher plant. 
D)  horsetail. 
E)  Venus flytrap. 
A)  club moss. 
B)  sundew plant. 
C)  pitcher plant. 
D)  horsetail. 
E)  Venus flytrap.

Question 16

The cohesion-tension theory explains how properties of water associated with hydrogen bonds

Accepted Answer

A)  move the watery sap solution through the xylem tissue cells of a plant. 
B)  conserve water in plants by secreting cuticle, a nonpolar triglyceride coating the epidermis of leaves. 
C)  form a positive pressure that moves phloem solution from "sources" to "sinks." 
D)  form a pressure behind stomata that forces water through them. 
E)  move some water through cell cytoplasm of roots, and some water in the spaces between root cells. 
A)  move the watery sap solution through the xylem tissue cells of a plant. 
B)  conserve water in plants by secreting cuticle, a nonpolar triglyceride coating the epidermis of leaves. 
C)  form a positive pressure that moves phloem solution from "sources" to "sinks." 
D)  form a pressure behind stomata that forces water through them. 
E)  move some water through cell cytoplasm of roots, and some water in the spaces between root cells.

Question 17

The "wearing away" of soil by wind and water is called erosion.

Accepted Answer

A) True 
 B)False

Question 18

The evaporation of water from a plant leaf's internal cell surfaces is

Accepted Answer

A)  transpiration. 
B)  condensation. 
C)  sublimation. 
D)  totally prevented by the leaf's cuticle. 
E)  hydrolysis. 
A)  transpiration. 
B)  condensation. 
C)  sublimation. 
D)  totally prevented by the leaf's cuticle. 
E)  hydrolysis.

Question 19

The concentration of solutes in most soil is lower than the concentration of solutes in root cells,so water enters the roots by

Accepted Answer

A)  cohesion. 
B)  hydrostatic pressure. 
C)  hydrolysis. 
D)  adhesion. 
E)  osmosis. 
A)  cohesion. 
B)  hydrostatic pressure. 
C)  hydrolysis. 
D)  adhesion. 
E)  osmosis.

Question 20

Nitrogen is needed in plants to manufacture

Accepted Answer

A)  All of the answer choices are correct. 
B)  amino acids. 
C)  chlorophyll. 
D)  proteins. 
E)  nucleic acids. 
A)  All of the answer choices are correct. 
B)  amino acids. 
C)  chlorophyll. 
D)  proteins. 
E)  nucleic acids.

Exam 23: Plant Nutrition and Transport

Most plants prevent nighttime transpiration by keeping their stomata closed,but because cacti open their stomata at night,transpiration can occur at that time.

Carnivorous plants like Sarracenia purpurea are which of the following?

Figuer: -How would a noncarnivorous plant obtain nutrients like nitrogen and phosphorus?

What can you conclude about the grass in your lawn if the recommended fertilizer has an N-P-K ratio of 29-3-4?

The waxy _____ ensures that all of the water coming into a root moves into the xylem.

The part of a plant's roots that forces water to enter cells and move into the xylem is the Casparian strip.

Soybeans will have several hundred Rhizobium nodules per plant and may divert 20-30 percent of its energy generated by photosynthesis to the nodule instead of to other plant functions when the nodule is actively fixing nitrogen.Why would the plant divert so much energy to Rhizobium?

"K" is the elemental symbol for

Which of the following is not a legume?

A typical,mature tree consumes only about 5 gallons of water a day.

Figuer: -A normal pitcher has a narrow keel and a wide pitcher opening,maximizing the potential for trapping prey.On the other hand,a leaf optimized for photosynthesis has a wide keel and a small pitcher opening.Based on this observation and the figure,what conclusion can be drawn?

In which of the situations below would a plant be at greatest risk for the formation of air bubbles in the xylem stream?

Farmers often use organic matter,such as manure,compost,or even crop residue from previous harvests,with the advantage of

In the pressure flow theory,any part of a plant that does not carry out photosynthesis is a

The carnivorous plant having two-sided leaves,each with highly sensitive trigger hairs for snapping shut on small animals is the

The cohesion-tension theory explains how properties of water associated with hydrogen bonds

The "wearing away" of soil by wind and water is called erosion.

The evaporation of water from a plant leaf's internal cell surfaces is

The concentration of solutes in most soil is lower than the concentration of solutes in root cells,so water enters the roots by

Nitrogen is needed in plants to manufacture

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