Question 1

Soybeans will have several hundred Rhizobium nodules.A study in Minnesota found that soybeans grown without ammonium sulfate fertilizer produced 52.4 bushels per acre,while adding 75 lbs of ammonium sulfate per acre gave a yield of 54.2 bushels per acre.What is the best explanation for this observation?

Accepted Answer

A)  Rhizobium produces PO4 and NH4, so you don't need any fertilizer
B)  Rhizobium produces NH4, so you don't need N containing fertilizer
C)  Rhizobium produces PO4, so you don't need P containing fertilizer
D)  Rhizobium cannot produce NH4, so you need to add N containing fertilizer
E)  Rhizobium cannot produce PO4, so you need to add P containing fertilizerF) A) and E)
G) A) and D)

Question 2

Some nitrogen fixing bacteria live in growths called ______________ on the plant's roots.

Accepted Answer

A)  Sieve tubes
B)  Nodules
C)  Nodes
D)  Root hairs
E)  InternodesF) A) and B)
G) C) and E)

Question 3

If water is abundant a plant's guard cells will ______________ and the stomata will _________________.

Accepted Answer

A)  Swell, close
B)  Swell, open
C)  Collapse, close
D)  Collapse, openE) B) and D)
F) A) and D)

Question 4

Nitrogen is used in plant cells to produce which of the following?

Accepted Answer

A)  Sugars and nucleic acids
B)  Proteins
C)  Proteins and nucleic acids
D)  Sugars
E)  Nucleic acidsF) A) and B)
G) A) and D)

Question 5

In many parts of the Everglades in Florida,excessive irrigation is lowering water levels and allowing salt water to enter the normally freshwater swamps.Why is this a problem for plants that have adapted to life in these swamps?

Accepted Answer

A)  The salt competes with minerals for uptake by the plants, limiting their growth
B)  Salts bind to nitrogen, preventing it from being taken up
C)  The plants cannot move sugars down the xylem if there is salt outside of the roots pulling water out
D)  Photosynthesis is inhibited by salt
E)  The plant roots cannot take up water if the soil salt concentration is highF) A) and D)
G) A) and B)

Question 6

Most plants prevent nighttime transpiration but plants like cacti open their stomata at night so that transpiration can occur.

Accepted Answer

A) True 
 B)False

Question 7

The products of photosynthesis move from the leaf to other parts of the plant via:

Accepted Answer

A)  Xylem
B)  Phloem
C)  Cortex
D)  Cortex and Phloem
E)  Cortex and XylemF) A) and E)
G) A) and B)

Question 8

What structure does the pitcher of a carnivorous plant arise from?

Accepted Answer

A)  Stems
B)  Roots
C)  Fruits
D)  Leaves
E)  StomataF) C) and E)
G) None of the above

Question 9

Scientists measured the pressure in the xylem of redwood trees at different heights and found that the higher they made their measurements,the lower the pressure.They extrapolated this to a pressure of zero,and concluded that the tallest a tree could grow is 122-130 meters.The tallest known tree on Earth is 112.7 meters.What assumption were the scientists making to conclude that when pressure was zero the plant could grow no further?

Accepted Answer

A)  Any leaves above that point would not receive any sunlight
B)  Any leaves above that point would not receive any water
C)  Stems above that point could not transport sugars in their xylem
D)  Transpiration would be less than uptake of water from the xylem
E)  The turgor pressure would be greater than gravityF) B) and E)
G) A) and D)

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

Nitrogen is made available to plants:

Accepted Answer

A)  Through their stomata
B)  Through their leaves
C)  Through their roots
D)  Through their roots and leaves
E)  Through their stomata and leavesF) A) and B)
G) C) and D)

Question 12

If water were being pushed from below,air bubbles in the xylem stream would not pose a problem.However,the observation that air bubbles can interrupt xylem function provides important evidence supporting the _______ theory of water movement.

Accepted Answer

A)  gravity-suction
B)  active transport
C)  pressure-flow
D)  osmotic
E)  cohesion-tensionF) A) and B)
G) A) and C)

Question 13

"K" is the chemical symbol for:

Accepted Answer

A)  Phosphorous
B)  Potassium
C)  Nickel
D)  Krypton
E)  CopperF) A) and E)
G) D) and E)

Question 14

The B horizon soil consists of most of the humus found in soil.

Accepted Answer

A) True 
 B)False

Question 15

The __________ and _____________ of a plant's leaf help conserve water in a plant.

Accepted Answer

A)  Root hairs, stomata
B)  Casparian strip, endodermis
C)  Stomata, cuticle
D)  Casparian strip, cuticle
E)  None of the above are correctF) A) and E)
G) B) and C)

Question 16

During dry conditions,abscisic acid binds to guard cell membranes and indirectly triggers them to lose potassium ions.What will this do to the plant?

Accepted Answer

A)  Decrease water loss by opening the stomata
B)  Decrease water loss by closing the stomata
C)  Increase water loss by closing the stomata
D)  Increase water loss by opening the stomataE) A) and D)
F) None of the above

Question 17

The innermost layer of the cortex of a plant root is the:

Accepted Answer

A)  Epidermis
B)  Ectoderm
C)  Mesoderm
D)  Endodermis
E)  ProtodermF) B) and D)
G) B) and E)

Question 18

Chemicals that are vital to the metabolism,growth,and reproduction of plants are called essential elements.

Accepted Answer

A) True 
 B)False

Question 19

The pressure placed on the inside of a cell membrane of a plant by water is called:

Accepted Answer

A)  Turgor
B)  Adhesion
C)  Cohesion
D)  Osmosis
E)  HydrolysisF) A) and E)
G) None of the above

Question 20

Soil scientists use relative amounts of sand,silt,and clay to classify soils.

Accepted Answer

A) True 
 B)False

Exam 22: Plant Nutrition and Transport

What structure does the pitcher of a carnivorous plant arise from?

Correct Answer
verified

In many parts of the Everglades in Florida,excessive irrigation is lowering water levels and allowing salt water to enter the normally freshwater swamps.Why is this a problem for plants that have adapted to life in these swamps?

Correct Answer
verified

Nitrogen is used in plant cells to produce which of the following?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Some nitrogen fixing bacteria live in growths called ______________ on the plant's roots.

Correct Answer
verified

The and ___ of a plant's leaf help conserve water in a plant.

Correct Answer
verified

The B horizon soil consists of most of the humus found in soil.

Correct Answer
verified

During dry conditions,abscisic acid binds to guard cell membranes and indirectly triggers them to lose potassium ions.What will this do to the plant?

Correct Answer
verified

"K" is the chemical symbol for:

Correct Answer
verified

If water is abundant a plant's guard cells will and the stomata will ___.

Correct Answer
verified

The products of photosynthesis move from the leaf to other parts of the plant via:

Correct Answer
verified

Most plants prevent nighttime transpiration but plants like cacti open their stomata at night so that transpiration can occur.

Correct Answer
verified

The innermost layer of the cortex of a plant root is the:

Correct Answer
verified

Chemicals that are vital to the metabolism,growth,and reproduction of plants are called essential elements.

Correct Answer
verified

Soil scientists use relative amounts of sand,silt,and clay to classify soils.

Correct Answer
verified

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

Correct Answer
verified

If water were being pushed from below,air bubbles in the xylem stream would not pose a problem.However,the observation that air bubbles can interrupt xylem function provides important evidence supporting the _______ theory of water movement.

Correct Answer
verified

The pressure placed on the inside of a cell membrane of a plant by water is called:

Correct Answer
verified

Nitrogen is made available to plants:

Correct Answer
verified

Exam 22: Plant Nutrition and Transport

What structure does the pitcher of a carnivorous plant arise from?

Correct AnswerverifiedShow Answer

In many parts of the Everglades in Florida,excessive irrigation is lowering water levels and allowing salt water to enter the normally freshwater swamps.Why is this a problem for plants that have adapted to life in these swamps?

Correct AnswerverifiedShow Answer

Nitrogen is used in plant cells to produce which of the following?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Some nitrogen fixing bacteria live in growths called ______________ on the plant's roots.

Correct AnswerverifiedShow Answer

The __________ and _____________ of a plant's leaf help conserve water in a plant.

Correct AnswerverifiedShow Answer

The B horizon soil consists of most of the humus found in soil.

Correct AnswerverifiedShow Answer

During dry conditions,abscisic acid binds to guard cell membranes and indirectly triggers them to lose potassium ions.What will this do to the plant?

Correct AnswerverifiedShow Answer

"K" is the chemical symbol for:

Correct AnswerverifiedShow Answer

If water is abundant a plant's guard cells will ______________ and the stomata will _________________.

Correct AnswerverifiedShow Answer

The products of photosynthesis move from the leaf to other parts of the plant via:

Correct AnswerverifiedShow Answer

Most plants prevent nighttime transpiration but plants like cacti open their stomata at night so that transpiration can occur.

Correct AnswerverifiedShow Answer

The innermost layer of the cortex of a plant root is the:

Correct AnswerverifiedShow Answer

Chemicals that are vital to the metabolism,growth,and reproduction of plants are called essential elements.

Correct AnswerverifiedShow Answer

Soil scientists use relative amounts of sand,silt,and clay to classify soils.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

If water were being pushed from below,air bubbles in the xylem stream would not pose a problem.However,the observation that air bubbles can interrupt xylem function provides important evidence supporting the _______ theory of water movement.

Correct AnswerverifiedShow Answer

The pressure placed on the inside of a cell membrane of a plant by water is called:

Correct AnswerverifiedShow Answer

Nitrogen is made available to plants:

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The and ___ of a plant's leaf help conserve water in a plant.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If water is abundant a plant's guard cells will and the stomata will ___.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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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