Question 1

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. 
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.

Question 2

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 transport 
A)  by a pump 
B)  by pressure 
C)  by gravity 
D)  by osmosis 
E)  by active transport

Question 3

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

Question 4

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

Question 5

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

Question 6

The main phloem-conducting cells are

Accepted Answer

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

Question 7

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)  node 
A)  lateral meristem only 
B)  apical meristem only 
C)  all types of meristem 
D)  blade 
E)  node

Question 8

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 CO₂ 
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 CO₂

Question 9

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. 
A)  stomata. 
B)  cuticle. 
C)  guard cell. 
D)  xylem. 
E)  phloem.

Question 10

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

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. 
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.

Question 12

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. 
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.

Question 13

Many carnivorous plants use modified leaves to trap their prey.

Accepted Answer

A) True 
 B)False

Question 14

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. 
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.

Question 15

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. 
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.

Question 16

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)  potassium 
A)  phosphorus 
B)  magnesium 
C)  copper 
D)  sulfur 
E)  potassium

Question 17

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. 
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.

Question 18

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. 
A)  node. 
B)  petiole. 
C)  internode. 
D)  blade. 
E)  companion cell.

Question 19

The tendency of water molecules to "cling" together is

Accepted Answer

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

Question 20

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

Exam 21: Plant Form and Function

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

How does sap move within phloem toward a sink?

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?

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

Carbon dioxide enters a plant from the atmosphere through pores called

The main phloem-conducting cells are

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?

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

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

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

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?

Many carnivorous plants use modified leaves to trap their prey.

The main vegetative parts of plants include

Tomatoes,squash,and beans are considered fruits because they

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

The bacterium Rhizobium

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

The tendency of water molecules to "cling" together is

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.

The Scientific Study of Life

The Chemistry of Life

Cells

The Energy of Life

Photosynthesis

Respiration and Fermentation

DNA Structure and Gene Function

DNA Replication,Binary Fission,and Mitosis

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Populations

Communities and Ecosystems

Preserving Biodiversity

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

The Digestive and Urinary Systems

The Immune System

Animal Reproduction and Development

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