Stern’s Introductory Plant Biology 14th Edition James Bidlack – Test Bank

Complete Test Bank With Answers

 

 

Sample Questions Posted Below

 

Stern’s Introductory Plant Biology, 14e (Bidlack)

Chapter 5 Roots and Soils

1) A root system may function in which of the following?

A) anchorage and storage

B) growth

C) absorption and conduction

D) production of new roots

E) All of the answers are correct.

Answer: E

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

2) In addition to anchoring a plant, roots usually function directly in which of the following

processes?

A) photosynthesis

B) production of new leaves

C) production of bud scales

D) absorption of minerals in solution

E) All of these answers are correct.

Answer: D

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

3) Typical root systems form up to ________ of the total dry biomass of a plant.

A) one tenth

B) one fifth

C) one fourth

D) one third

E) one half

Answer: D

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

1

Copyright © 2018 McGraw-Hill4) Which of the following is a part of the embryo of a seed?

A) root hairs

B) radicle

C) fibrous roots

D) taproot

E) adventitious roots

Answer: B

Topic: seed

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

5) ________ root systems develop from the radicle.

A) Adventitious

B) Climbing

C) Stem cutting

D) Fibrous

E) Taproot

Answer: E

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

6) Roots that develop from an organ OTHER than an existing root are called

A) root hairs

B) fibrous roots

C) radicle

D) adventitious roots

E) primary root

Answer: D

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

2

Copyright © 2018 McGraw-Hill7) Monocots, such as grasses, usually have ________ root systems.

A) simple, straight

B) taproot

C) fibrous

D) secondary

E) aerial

Answer: C

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

8) The perception of gravity by a root takes place in

A) root hairs.

B) the region of elongation.

C) the region of cell division (apical meristem).

D) the region of maturation.

E) the root cap.

Answer: E

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

9) In traversing the root to the central xylem vessels, the last living tissue that water passes

through before entering the xylem is the

A) endodermis.

B) pericycle.

C) cortex.

D) phloem.

E) epidermis.

Answer: B

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

3

Copyright © 2018 McGraw-Hill10) Cells of the apical meristem

A) have large vacuoles.

B) divide at a fairly steady rate.

C) have little to do with the root cap.

D) are generally cuboidal in shape.

E) have no nuclei.

Answer: D

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

11) The tissue adjacent to the endodermis toward the center of a root is the

A) cortex.

B) pith.

C) pericycle.

D) xylem.

E) phloem.

Answer: C

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

12) Which of the following cells is relatively thin-walled?

A) stone cell

B) fiber

C) tracheid

D) vessel element

E) passage cell

Answer: E

Topic: cell; root

Bloom’s: 1. Remember

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

4

Copyright © 2018 McGraw-Hill13) Which of the following tissues is common in roots but not in stems?

A) endodermis

B) parenchyma

C) cortex

D) epidermis

E) pith

Answer: A

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

14) Parts of the pericycle and parenchyma between the arms of xylem and patches of phloem in

young roots of many dicots and conifers become

A) cork cambium.

B) endodermis.

C) cortex.

D) vascular cambium.

E) Casparian strips.

Answer: D

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

15) The most abundant cell type in periderm is

A) parenchyma.

B) collenchyma.

C) cork.

D) vessel elements.

E) ray initials.

Answer: C

Topic: cell

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.; 05.03 Provide the specific functions of the endodermis and the

pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

5

Copyright © 2018 McGraw-Hill16) When trees undergo root grafting with one another, an unfortunate result can be

A) strangling of one tree by another.

B) disease spreads to healthy trees.

C) insufficient food for all the trees.

D) fewer leaves on the trees.

E) the development of thinner bark.

Answer: B

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

17) Root hairs are prominent in the

A) root cap.

B) apical meristem.

C) region of elongation.

D) root axils.

E) region of maturation.

Answer: E

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

18) The perception of gravity by roots is aided by

A) amyloplasts.

B) chloroplasts.

C) chromoplasts.

D) leucoplasts.

E) gravoplasts.

Answer: A

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.; 05.02 Describe the

root regions, including the root cap, region of cell division, region of cell elongation, and region

of maturation (including root hairs and all tissues) and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

6

Copyright © 2018 McGraw-Hill19) Rhythmic cell divisions in young roots often

A) occur about once a week.

B) reach a peak once or twice a day.

C) peak several times during a 24-hour period.

D) result in a given root growing several meters a day.

E) do not occur in monocots.

Answer: B

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

20) Cells of an endodermis that do not have Casparian strips are

A) sieve-tube elements.

B) tracheids.

C) fibers.

D) collenchyma.

E) passage cells.

Answer: E

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

21) The tissue in which a cork cambium first develops in woody dicot roots is the

A) pericycle.

B) endodermis.

C) primary xylem.

D) primary phloem.

E) cortex.

Answer: A

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

7

Copyright © 2018 McGraw-Hill22) Cells of the root cap ease the growth of young roots through the soil by ________.

A) secreting slippery lipids like waxes

B) producing oils

C) producing a mucilaginous lubricant

D) forcing a passage between soil particles

E) none of the above

Answer: C

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

23) The region of cell division in a root is also known as ________.

A) the root apical meristem

B) shoot apical meristem

C) region of root hair production

D) zone of elongation

E) endodermis

Answer: A

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

24) The region of elongation is characterized by ________.

A) root hair production

B) development of the root cap

C) producing ground meristem

D) production of branch roots

E) increase in size of cells

Answer: E

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

8

Copyright © 2018 McGraw-Hill25) How do lateral roots differ from root hairs?

A) Lateral roots have a root cap; root hairs do not.

B) Lateral roots are formed of many cells; root hairs are a single cell.

C) Lateral roots form from the pericycle; root hairs develop in region of maturation.

D) Lateral roots may live for many months; root hairs live for a few days.

E) All of the above are true.

Answer: E

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

26) How does monocot root structure differ from dicot root structure?

A) Monocot endodermis cells lack a Casparian strip.

B) Dicot roots lack a central pith region.

C) Monocot roots usually form a tap root system.

D) Dicot roots do not form branch roots.

E) There is no structural difference between monocot and dicot root systems.

Answer: B

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

27) Root hairs are found in the region of the root called the

A) root cap.

B) apical meristem.

C) region of elongation.

D) region of maturation.

E) endodermis.

Answer: D

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.; 05.02 Describe the

root regions, including the root cap, region of cell division, region of cell elongation, and region

of maturation (including root hairs and all tissues) and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

9

Copyright © 2018 McGraw-Hill28) This tissue (region) is present in monocot roots but absent in dicot roots.

A) phloem

B) epidermis

C) cortex

D) xylem

E) pith

Answer: E

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

29) One unique function of the root cap is

A) the sensing of a gravitational force.

B) production of root hairs.

C) formation of bud scales.

D) production of an ion barrier.

E) Both the sensing of a gravitational force and production of root hairs are correct.

Answer: A

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

30) Root hairs

A) are specialized epidermal cells.

B) are covered with a waxy cuticle.

C) increase the surface area for absorption of water.

D) live only one day.

E) Both are specialized epidermal cells and increase the surface area for absorption of water are

correct.

Answer: E

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

10

Copyright © 2018 McGraw-Hill31) Stored food, especially starch and other carbohydrates in storage roots, can be found in this

tissue of a root:

A) endodermis.

B) epidermis.

C) pericycle.

D) cortex.

E) cork.

Answer: D

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.; 05.06 Describe how a

good agricultural soil is developed from raw materials.

Accessibility: Keyboard Navigation

Gradable: automatic

32) A unique feature of the pericycle is

A) its retention of meristematic potential.

B) the production of lateral roots.

C) the presence of a Casparian strip.

D) its location next to the epidermis.

E) Both its retention of meristematic potential and the production of lateral roots are correct.

Answer: E

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

33) Which of the following is NOT a specialized root?

A) branch or lateral roots

B) food storage root of sweet potato

C) prop root of corn

D) contractile roots

E) propagative roots

Answer: A

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

11

Copyright © 2018 McGraw-Hill34) Specialized roots that permit aquatic plants to facilitate gas exchange are called

A) velamen roots.

B) water-storage roots.

C) buttress roots.

D) pneumatophores.

E) prop roots.

Answer: D

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

35) Buds that develop on roots are referred to as

A) axillary.

B) terminal.

C) intrusive.

D) adventitious.

E) pseudobuds.

Answer: D

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

36) Mycorrhizae roots are those that

A) have a symbiotic association with fungi.

B) have a symbiotic association with nitrogen fixing bacteria.

C) contain hyphae of parasitic fungi.

D) are above ground roots that serve to support the stem.

E) are propagative roots.

Answer: A

Topic: fungi; root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

12

Copyright © 2018 McGraw-Hill37) Which statement about mycorrhizae is INCORRECT?

A) The type of mycorrhizae in which the fungi invade the plant cells is called endotrophic.

B) Only the plants benefit from a mycorrhizae association.

C) Ectotrophic mycorrhizae do not enter the tree root cells.

D) Mycorrhizae benefit both the plants and the fungi..

E) Mycorrhizae are essential for normal growth and development of trees and many herbaceous

plants.

Answer: B

Topic: fungi; root

Bloom’s: 2. Understand

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

38) The rootlike projections of parasitic plants that develop along their stems and penetrate the

host plants’ tissues are called

A) parenchyma.

B) mycorrhizae.

C) haustoria.

D) mutualistic.

E) aerial roots.

Answer: C

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

39) Which of the following is/are absent in dicot roots?

A) xylem

B) phloem

C) epidermis

D) cortex

E) nodes

Answer: E

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

13

Copyright © 2018 McGraw-Hill40) Which of the following spices or flavorings is obtained from roots?

A) sarsaparilla

B) angelica

C) licorice

D) sassafras

E) All of these answers are correct.

Answer: E

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.05 List at least 10 practical human uses of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

41) People harvest the storage roots of biennials such as ________ for their food value.

A) carrots

B) licorice

C) reserpine

D) rotenone

E) All of these answers are correct.

Answer: A

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.05 List at least 10 practical human uses of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

42) Which soil horizon is the most important agriculturally?

A) A horizon

B) B horizon

C) C horizon

D) D horizon

E) both B horizon and C horizon are correct.

Answer: A

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Describe how a good agricultural soil is developed from raw

materials.

Accessibility: Keyboard Navigation

Gradable: automatic

14

Copyright © 2018 McGraw-Hill43) The best soil for plant growth is

A) clay.

B) sand.

C) loam.

D) peat.

E) both clay and sand are correct.

Answer: C

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Describe how a good agricultural soil is developed from raw

materials.

Accessibility: Keyboard Navigation

Gradable: automatic

44) Water that drains out of the pores in soils after a rain is called

A) capillary water.

B) gravitational water.

C) hygroscopic water.

D) field capacity.

E) available water.

Answer: B

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

45) Good agricultural soils are granular soils with pore spaces that occupy which of the

following percentages of the total volume of the soil?

A) 10% to 20%

B) 20% to 30%

C) 40% to 60%

D) 60% to 70%

E) None of these answers are correct.

Answer: C

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

15

Copyright © 2018 McGraw-Hill46) The arrangement of soil particles into groups called aggregates refers to

A) soil structure.

B) soil texture.

C) parent material.

D) micelles.

E) soil nutrients.

Answer: A

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

47) What does too much water do to the soil?

A) depletes mineral nutrients

B) slows mineralization

C) interferes with plant growth

D) accelerates the breakdown of nitrates

E) All of these answers are correct.

Answer: E

Topic: soil

Bloom’s: 2. Understand

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

48) In a soil profile, topsoil is called the

A) A horizon.

B) B horizon.

C) C horizon.

D) parent material.

E) metamorphic quotient.

Answer: A

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Describe how a good agricultural soil is developed from raw

materials.

Accessibility: Keyboard Navigation

Gradable: automatic

16

Copyright © 2018 McGraw-Hill49) Soil water between field capacity and the permanent wilting point is called

A) hygroscopic water.

B) gravitational water.

C) capillary water.

D) intermediate water.

E) available water.

Answer: E

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

50) A root hair consists of a short row of cells.

Answer: FALSE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

51) Pith tissue is absent in dicot roots.

Answer: TRUE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.; 05.02 Describe the

root regions, including the root cap, region of cell division, region of cell elongation, and region

of maturation (including root hairs and all tissues) and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

52) Soil parent material extends down to bedrock.

Answer: TRUE

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Describe how a good agricultural soil is developed from raw

materials.

Accessibility: Keyboard Navigation

Gradable: automatic

17

Copyright © 2018 McGraw-Hill18

Copyright © 2018 McGraw-Hill53) Soils in low wet areas tend to contain hardly any organic matter.

Answer: FALSE

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Describe how a good agricultural soil is developed from raw

materials.

Accessibility: Keyboard Navigation

Gradable: automatic

54) Clay particles have negative electric charge which tend to retard water drainage and retain

positively charged ions.

Answer: TRUE

Topic: soil

Bloom’s: 2. Understand

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

55) A colloid is a mixture of water and particles that are smaller than average molecules in size.

Answer: FALSE

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

56) Soil bacteria and fungi are important components of soil because they contribute to soil

porosity and release useable minerals by decomposing organic matter.

Answer: TRUE

Topic: soil

Bloom’s: 2. Understand

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

19

Copyright © 2018 McGraw-Hill57) Liming is used to counteract soil acidity.

Answer: TRUE

Topic: soil

Bloom’s: 1. Remember

Learning Outcome: 05.06 Explain how soil constituents affect the availability of water to plants

and discuss the role of soil pH in nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

58) The protective suberin bands called Casparian strips are confined to the cells of the

epidermis.

Answer: FALSE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

59) Branch roots arise from buds initiated on the outer surface of a root.

Answer: FALSE

Topic: soil

Bloom’s: 2. Understand

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

60) When a seed germinates, the part of the embryo that develops into the first root is called a

radicle.

Answer: TRUE

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

20

Copyright © 2018 McGraw-Hill61) Outer cells of the root cap secrete mucilage.

Answer: TRUE

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.02 Describe the root regions, including the root cap, region of cell

division, region of cell elongation, and region of maturation (including root hairs and all tissues)

and list the function of each.

Accessibility: Keyboard Navigation

Gradable: automatic

62) Haustoria and mycorrhizae are two examples of tap roots.

Answer: FALSE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

63) Grasses generally produce a fibrous root system.

Answer: TRUE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

64) Casparian strips are composed primarily of suberin.

Answer: TRUE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.03 Provide the specific functions of the endodermis and the pericycle.

Accessibility: Keyboard Navigation

Gradable: automatic

65) Natural grafting between roots of different trees of the same species is well known in the

tropics.

Answer: TRUE

Topic: grafting; root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

21

Copyright © 2018 McGraw-Hill66) In dicot roots the xylem is formed in discrete patches.

Answer: FALSE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

67) Contractile roots are common in woody plants.

Answer: FALSE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

68) Plant root systems can detect and respond to gravity within 30 minutes to a few hours.

Answer: TRUE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.01 State the primary functions and forms of roots.; 05.06 Explain how

soil constituents affect the availability of water to plants and discuss the role of soil pH in

nutrient availability.

Accessibility: Keyboard Navigation

Gradable: automatic

69) The function of mycorrhizae fungi is to facilitate uptake and availability of water and

minerals, especially phosphorous.

Answer: TRUE

Topic: fungi; root

Bloom’s: 2. Understand

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

22

Copyright © 2018 McGraw-Hill70) The vascular tissue of a new lateral (branch) root connects with the vascular tissue of the

older root for continuous conduction of water and minerals.

Answer: TRUE

Topic: root

Bloom’s: 2. Understand

Learning Outcome: 05.01 State the primary functions and forms of roots.

Accessibility: Keyboard Navigation

Gradable: automatic

71) The term saprophyte is correctly applied to plants such as orchids that grow on other plants

and obtain water and nutrients from the air and/or rain.

Answer: FALSE

Topic: root

Bloom’s: 1. Remember

Learning Outcome: 05.04 State the differences among the various types of specialized roots.

Accessibility: Keyboard Navigation

Gradable: automatic

23

Copyright © 2018 McGraw-Hill