Question 1

The main phloem-conducting cells are

Accepted Answer

A)   tracheids.
B)   companion cells.
C)   sieve tube elements.
D)   vessel elements.
E)   stomata.F) A) and C)
G) B) and D)

Question 2

You are examining a newly discovered plant when you find a dome of cells at the end of its stem.You have found the new plant's

Accepted Answer

A)   apical meristem.
B)   lateral meristem.
C)   tracheid.
D)   vascular bundle.
E)   None of the answer choices are correct.F) B) and E)
G) C) and E)

Question 3

The opening and closing of a plant's stomata is regulated by the flow of ________ ions.

Accepted Answer

A)   phosphorus
B)   magnesium
C)   copper
D)   sulfur
E)   potassiumF) D) and E)
G) All of the above

Question 4

Many carnivorous plants use modified leaves to trap their prey.

Accepted Answer

A) True 
 B)False

Question 5

Tomatoes,squash,and beans are considered fruits because they

Accepted Answer

A)   contain seeds from a flowering plant.
B)   were produced by a flowering plant.
C)   can have a color other than green.
D)   grow above the ground.
E)   can be eaten raw.F) C) and D)
G) None of the above

Question 6

Apoptosis is Greek for "dropping off" and refers to the programmed death of cells that attach the petiole to the stem.When these cells die in the fall,the leaves drop.Cells in which part of the plant are undergoing apoptosis?

Accepted Answer

A)   lateral meristem only
B)   apical meristem only
C)   all types of meristem
D)   blade
E)   nodeF) B) and C)
G) A) and E)

Question 7

A waxy layer secreted by the epidermal cells of a plant is the

Accepted Answer

A)   stomata.
B)   cuticle.
C)   guard cell.
D)   xylem.
E)   phloem.F) B) and C)
G) None of the above

Question 8

You are examining a plant that has recently been discovered.You notice that its leaves have small openings,and that when these openings close,photosynthesis stops.The cells on either side of these pores are

Accepted Answer

A)   sieve tube cells.
B)   vascular cells.
C)   companion cells.
D)   pith cells.
E)   guard cells.F) A) and E)
G) D) and E)

Question 9

The main vegetative parts of plants include

Accepted Answer

A)   roots, flowers, and stems.
B)   fruits, flowers, and leaves.
C)   roots, stems, and leaves.
D)   stems, roots, flowers, leaves, and fruits.
E)   flowers and fruits only.F) A) and B)
G) B) and E)

Question 10

How does sap move within phloem toward a sink?

Accepted Answer

A)   by a pump
B)   by pressure
C)   by gravity
D)   by osmosis
E)   by active transportF) A) and D)
G) B) and D)

Question 11

If a friend,who knew you were going to a garden center,asked you to buy some "10-10-10," you would know that you were being asked for a fertilizer containing

Accepted Answer

A)   zinc, magnesium, and potassium.
B)   nitrogen, phosphorus, and potassium.
C)   copper, nitrogen, and phosphorus.
D)   carbon, sulfur, and nitrogen.
E)   nitrogen, zinc, and copper.F) D) and E)
G) C) and E)

Question 12

If you cut a stalk of celery and put it in a glass of water containing red food coloring overnight,the next morning the celery will be red.Through what was the food coloring taken up?

Accepted Answer

A)   phloem
B)   stomata
C)   xylem
D)   dermal tissue
E)   ground tissueF) A) and E)
G) B) and C)

Question 13

Throughout a growing season,a plant uses up to 1000 liters (or kg.) of water to produce just 1 kilogram of tissue.What happens to most of the remaining 999 kg.of water?

Accepted Answer

A)   It is used in the cytoplasm.
B)   It is used in photosynthesis.
C)   It is used in hydrolysis reactions.
D)   It evaporates (transpiration) .
E)   It passes back through the roots into the soil.F) A) and B)
G) None of the above

Question 14

When preparing slides to look at mitosis,the tips of onion roots are a good source of cells because they contain ________ where mitosis is taking place consistently.

Accepted Answer

A)   vascular tissue
B)   veins
C)   apical meristems
D)   lateral meristems
E)   All answers are correct.F) B) and C)
G) A) and B)

Question 15

Why might the entry of salt water into a freshwater swamp harm the native plants there?

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 high.F) C) and D)
G) B) and E)

Question 16

The part of a plant that is the stalk-like part of a leaf is the

Accepted Answer

A)   node.
B)   petiole.
C)   internode.
D)   blade.
E)   companion cell.F) None of the above
G) D) and E)

Question 17

The tendency of water molecules to "cling" together is

Accepted Answer

A)   cohesion.
B)   adhesion.
C)   hydrolysis.
D)   condensation.
E)   evaporation.F) A) and B)
G) B) and C)

Question 18

Carbon dioxide enters a plant from the atmosphere through pores called

Accepted Answer

A)   guard cells.
B)   companion cells.
C)   sieve tubes.
D)   nodes.
E)   stomata.F) C) and D)
G) A) and E)

Question 19

The bacterium Rhizobium

Accepted Answer

A)   triggers the development of root nodules in legumes.
B)   enters plants through the root hairs.
C)   lives symbiotically within plant cells.
D)   breaks the triple covalent bond in N₂.
E)   All answers are correct.F) A) and E)
G) A) and B)

Question 20

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.Which of the following most likely limits the height of trees?

Accepted Answer

A)   the amount of transpiration in leaves
B)   the amount of photosynthesis in leaves
C)   the amount of energy needed to pump water to the tops of the trees
D)   the strength of water cohesion
E)   the ability to take up CO₂F) A) and B)
G) B) and C)

Exam 21: Plant Form and Function

The bacterium Rhizobium

Correct Answer
verified

Tomatoes,squash,and beans are considered fruits because they

Correct Answer
verified

Why might the entry of salt water into a freshwater swamp harm the native plants there?

Correct Answer
verified

If you cut a stalk of celery and put it in a glass of water containing red food coloring overnight,the next morning the celery will be red.Through what was the food coloring taken up?

Correct Answer
verified

Apoptosis is Greek for "dropping off" and refers to the programmed death of cells that attach the petiole to the stem.When these cells die in the fall,the leaves drop.Cells in which part of the plant are undergoing apoptosis?

Correct Answer
verified

If a friend,who knew you were going to a garden center,asked you to buy some "10-10-10," you would know that you were being asked for a fertilizer containing

Correct Answer
verified

The part of a plant that is the stalk-like part of a leaf is the

Correct Answer
verified

Many carnivorous plants use modified leaves to trap their prey.

Correct Answer
verified

You are examining a newly discovered plant when you find a dome of cells at the end of its stem.You have found the new plant's

Correct Answer
verified

Correct Answer
verified

Carbon dioxide enters a plant from the atmosphere through pores called

Correct Answer
verified

You are examining a plant that has recently been discovered.You notice that its leaves have small openings,and that when these openings close,photosynthesis stops.The cells on either side of these pores are

Correct Answer
verified

A waxy layer secreted by the epidermal cells of a plant is the

Correct Answer
verified

When preparing slides to look at mitosis,the tips of onion roots are a good source of cells because they contain ________ where mitosis is taking place consistently.

Correct Answer
verified

The tendency of water molecules to "cling" together is

Correct Answer
verified

Throughout a growing season,a plant uses up to 1000 liters (or kg.) of water to produce just 1 kilogram of tissue.What happens to most of the remaining 999 kg.of water?

Correct Answer
verified

The main vegetative parts of plants include

Correct Answer
verified

The opening and closing of a plant's stomata is regulated by the flow of ________ ions.

Correct Answer
verified

The main phloem-conducting cells are

Correct Answer
verified

How does sap move within phloem toward a sink?

Correct Answer
verified

Exam 21: Plant Form and Function

The bacterium Rhizobium

Correct AnswerverifiedShow Answer

Tomatoes,squash,and beans are considered fruits because they

Correct AnswerverifiedShow Answer

Why might the entry of salt water into a freshwater swamp harm the native plants there?

Correct AnswerverifiedShow Answer

If you cut a stalk of celery and put it in a glass of water containing red food coloring overnight,the next morning the celery will be red.Through what was the food coloring taken up?

Correct AnswerverifiedShow Answer

Apoptosis is Greek for "dropping off" and refers to the programmed death of cells that attach the petiole to the stem.When these cells die in the fall,the leaves drop.Cells in which part of the plant are undergoing apoptosis?

Correct AnswerverifiedShow Answer

If a friend,who knew you were going to a garden center,asked you to buy some "10-10-10," you would know that you were being asked for a fertilizer containing

Correct AnswerverifiedShow Answer

The part of a plant that is the stalk-like part of a leaf is the

Correct AnswerverifiedShow Answer

Many carnivorous plants use modified leaves to trap their prey.

Correct AnswerverifiedShow Answer

You are examining a newly discovered plant when you find a dome of cells at the end of its stem.You have found the new plant's

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Carbon dioxide enters a plant from the atmosphere through pores called

Correct AnswerverifiedShow Answer

You are examining a plant that has recently been discovered.You notice that its leaves have small openings,and that when these openings close,photosynthesis stops.The cells on either side of these pores are

Correct AnswerverifiedShow Answer

A waxy layer secreted by the epidermal cells of a plant is the

Correct AnswerverifiedShow Answer

When preparing slides to look at mitosis,the tips of onion roots are a good source of cells because they contain ________ where mitosis is taking place consistently.

Correct AnswerverifiedShow Answer

The tendency of water molecules to "cling" together is

Correct AnswerverifiedShow Answer

Throughout a growing season,a plant uses up to 1000 liters (or kg.) of water to produce just 1 kilogram of tissue.What happens to most of the remaining 999 kg.of water?

Correct AnswerverifiedShow Answer

The main vegetative parts of plants include

Correct AnswerverifiedShow Answer

The opening and closing of a plant's stomata is regulated by the flow of ________ ions.

Correct AnswerverifiedShow Answer

The main phloem-conducting cells are

Correct AnswerverifiedShow Answer

How does sap move within phloem toward a sink?

Correct AnswerverifiedShow Answer

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