Question 1

Which of the following particles are retained by clay soil and exchanged for hydrogen ions when plants take them up?

Accepted Answer

A)  calcium & potassium
B)  calcium & ammonium
C)  sodium & sulphur
D)  iron & boron
E)  calcium & copperF) C) and D)
G) B) and C)

Question 2

Water moves into the guard cells by osmosis in response to the movement of K+ into the guard cells.

Accepted Answer

A) True 
 B)False

Question 3

Which type of soil will supply nutrients to plants while its acidity leaches minerals from rock?

Accepted Answer

A)  humus
B)  clay
C)  sand
D)  loamE) A) and B)
F) A) and C)

Question 4

Because most roots need gaseous oxygen as well as liquid water,the best soil for agricultural plants is

Accepted Answer

A)  sand,since it has the greatest pore spaces.
B)  clay,since it holds onto water better than silt or sand.
C)  silt,because it is intermediate between sand and clay in size.
D)  loam,which is a mixture of all size soil particles,and therefore is able to hold water but drain well.
E)  All sizes of soil particles (sand,silt,clay) are equal in soil properties.F) B) and D)
G) B) and C)

Question 5

Analysis of the nutrient content of phloem is performed on phloem sap that is made available when an aphid is cut away from its stylet.

Accepted Answer

A) True 
 B)False

Question 6

List the steps associated with the pressure-flow model of phloem transport.

Accepted Answer

1.Sugars are produced in the source (lea...

Question 7

Air with varying amounts of CO2,within the ranges found in nature,is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Accepted Answer

A)  Supports both hypothesis I and II.
B)  Supports only hypothesis I.
C)  Supports only hypothesis II.
D)  Supports neither hypothesis.E) B) and D)
F) All of the above

Question 8

The transpiration rate in plants is increased by

Accepted Answer

A)  wind.
B)  elevated temperature.
C)  increased sunlight intensity.
D)  All of the choices increase the rate of transpiration.E) None of the above
F) A) and B)

Question 9

Essential plant nutrients include carbon,potassium,calcium,and nitrogen.

Accepted Answer

A) True 
 B)False

Question 10

Entry of mineral ions into the xylem is regulated by cells of the cortex.

Accepted Answer

A) True 
 B)False

Question 11

Soil formation is due to

Accepted Answer

A)  decomposition of organic matter.
B)  mechanical weathering of bedrock.
C)  chemical weathering of rock.
D)  All of the choices are correct.E) A) and B)
F) A) and C)

Question 12

Which of the following conducting cells are associated with xylem?

Accepted Answer

A)  tracheids & vessel elements
B)  sieve-tube members & companion cells
C)  vessel elements & companion cells
D)  sieve-tube members & vessel elements
E)  tracheids & sieve-tube membersF) C) and D)
G) A) and E)

Question 13

Rhizobium bacteria live in root nodules and

Accepted Answer

A)  fix atmospheric nitrogen to NH4+ to build organic compounds.
B)  fix carbon dioxide so that the carbon may be used to build glucose.
C)  increase the surface area,thereby increasing the water absorbing capacity of the plant's roots.
D)  All of the answer choices are correct.E) A) and B)
F) A) and D)

Question 14

Which of the following is NOT one of the three most common elements in plants?

Accepted Answer

A)  oxygen
B)  sulfur
C)  carbon
D)  hydrogenE) B) and D)
F) C) and D)

Question 15

Researchers discover that guard cells of the lady slipper orchid lack chloroplasts; yet the guard cells regularly open and close.

Accepted Answer

A)  Supports both hypothesis I and II.
B)  Supports only hypothesis I.
C)  Supports only hypothesis II.
D)  Supports neither hypothesis.E) B) and C)
F) A) and C)

Question 16

Which is a correct relationship between soil particles and soil characteristics?

Accepted Answer

A)  Clay particles hold tight to NO3- and the nitrogen content of clay soils is therefore high.
B)  Clay is unable to retain Ca2+ and K+ which are easily leached away.
C)  Clay holds water and clumps.
D)  Sand prevents water erosion and leaching.E) C) and D)
F) A) and D)

Question 17

Describe the steps required for a plant to take up minerals from the environment.

Accepted Answer

Answers may vary slightly but should inc...

Question 18

Select the correct sequence for mineral uptake in plants. 
a.The root cells will initially uptake the minerals.
B.The upwards movement of water will carry the minerals towards the leaves.
C.Some of the minerals are deposited in the leaf cells.
D.The minerals move into the xylem of the vascular tissue.
E.Some of the minerals leave the xylem and enter the various tissues that require them.

Accepted Answer

A)  a - d - b - e - c
B)  a - b - d - e - c
C)  c- a - d - b - e
D)  d - b - e - a - c
E)  d - b - c - a - eF) B) and C)
G) A) and E)

Question 19

The early experiment by Van Helmont (1600s) describes how he grew a tree in a large pot and found that after five years,the amount of soil in the pot had not changed.He concluded that the increase in weight was due to the addition of water.At that time,the compounds in air had not yet been identified.Today,you know that he only discovered half the story.Which additional experiment would provide evidence for the rest of the story?

Accepted Answer

A)  Carbon is discovered as a major element in trees and is lacking in water molecules.
B)  Radioactive carbon in carbon dioxide in the air is identified as part of the tree structure.
C)  A very careful measurement of the water taken in and lost by the tree would have revealed only half the added weight gained by the tree was from water.
D)  Analysis of nutrients in the soil would account for half the weight of the tree.
E)  All of the experiments but for an analysis of nutrients in the soil would account for half the weight of the tree.F) C) and D)
G) B) and C)

Question 20

Which statement is NOT true about root adaptations in plants?

Accepted Answer

A)  Some plants have very poorly developed roots or none at all.
B)  Fungal mycorrhizae depend on plants for the fungus's supply of water and minerals.
C)  Some plants,including orchids,require the presence of fungal symbionts to survive.
D)  Parasitic plants have root adaptations called haustoria that draw nutrients from the host.
E)  Bacteria of the genus Rhizobium live in root nodules in legumes,producing available nitrogen that the plant uses.F) A) and C)
G) A) and B)

Exam 25: Flowering Plants: Nutrition and Transport

Entry of mineral ions into the xylem is regulated by cells of the cortex.

Correct Answer
verified

Correct Answer
verified

Essential plant nutrients include carbon,potassium,calcium,and nitrogen.

Correct Answer
verified

Analysis of the nutrient content of phloem is performed on phloem sap that is made available when an aphid is cut away from its stylet.

Correct Answer
verified

Researchers discover that guard cells of the lady slipper orchid lack chloroplasts; yet the guard cells regularly open and close.

Correct Answer
verified

The transpiration rate in plants is increased by

Correct Answer
verified

Which is a correct relationship between soil particles and soil characteristics?

Correct Answer
verified

List the steps associated with the pressure-flow model of phloem transport.

Correct Answer
verified
1.Sugars are produced in the source (lea...
View Answer

Correct Answer
verified

Because most roots need gaseous oxygen as well as liquid water,the best soil for agricultural plants is

Correct Answer
verified

Water moves into the guard cells by osmosis in response to the movement of K+ into the guard cells.

Correct Answer
verified

Describe the steps required for a plant to take up minerals from the environment.

Correct Answer
verified
Answers may vary slightly but should inc...
View Answer

Which statement is NOT true about root adaptations in plants?

Correct Answer
verified

Which type of soil will supply nutrients to plants while its acidity leaches minerals from rock?

Correct Answer
verified

Rhizobium bacteria live in root nodules and

Correct Answer
verified

Which of the following particles are retained by clay soil and exchanged for hydrogen ions when plants take them up?

Correct Answer
verified

Which of the following conducting cells are associated with xylem?

Correct Answer
verified

Air with varying amounts of CO₂,within the ranges found in nature,is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Correct Answer
verified

Which of the following is NOT one of the three most common elements in plants?

Correct Answer
verified

Soil formation is due to

Correct Answer
verified

Exam 25: Flowering Plants: Nutrition and Transport

Entry of mineral ions into the xylem is regulated by cells of the cortex.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Essential plant nutrients include carbon,potassium,calcium,and nitrogen.

Correct AnswerverifiedShow Answer

Analysis of the nutrient content of phloem is performed on phloem sap that is made available when an aphid is cut away from its stylet.

Correct AnswerverifiedShow Answer

Researchers discover that guard cells of the lady slipper orchid lack chloroplasts; yet the guard cells regularly open and close.

Correct AnswerverifiedShow Answer

The transpiration rate in plants is increased by

Correct AnswerverifiedShow Answer

Which is a correct relationship between soil particles and soil characteristics?

Correct AnswerverifiedShow Answer

List the steps associated with the pressure-flow model of phloem transport.

Correct Answerverified1.Sugars are produced in the source (lea...View AnswerShow Answer

Correct AnswerverifiedShow Answer

Because most roots need gaseous oxygen as well as liquid water,the best soil for agricultural plants is

Correct AnswerverifiedShow Answer

Water moves into the guard cells by osmosis in response to the movement of K+ into the guard cells.

Correct AnswerverifiedShow Answer

Describe the steps required for a plant to take up minerals from the environment.

Correct AnswerverifiedAnswers may vary slightly but should inc...View AnswerShow Answer

Which statement is NOT true about root adaptations in plants?

Correct AnswerverifiedShow Answer

Which type of soil will supply nutrients to plants while its acidity leaches minerals from rock?

Correct AnswerverifiedShow Answer

Rhizobium bacteria live in root nodules and

Correct AnswerverifiedShow Answer

Which of the following particles are retained by clay soil and exchanged for hydrogen ions when plants take them up?

Correct AnswerverifiedShow Answer

Which of the following conducting cells are associated with xylem?

Correct AnswerverifiedShow Answer

Air with varying amounts of CO2,within the ranges found in nature,is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Correct AnswerverifiedShow Answer

Which of the following is NOT one of the three most common elements in plants?

Correct AnswerverifiedShow Answer

Soil formation is due to

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
1.Sugars are produced in the source (lea...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Answers may vary slightly but should inc...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Air with varying amounts of CO₂,within the ranges found in nature,is forced across leaf surfaces and into sub-stomatal cavities; this produces closure of the stomata.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified