Question 1

The region of cell division in a root is also known as __________.

Accepted Answer

A)  the root apical meristem 
B)  shoot apical meristem 
C)  region of root hair production 
D)  zone of elongation 
E)  endodermis 
A)  the root apical meristem 
B)  shoot apical meristem 
C)  region of root hair production 
D)  zone of elongation 
E)  endodermis A

Question 2

Cells of the apical meristem

Accepted Answer

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. 
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. D

Question 3

Casparian strips are composed primarily of suberin.

Accepted Answer

A) True 
 B)False  True

Question 4

Natural grafting between roots of different trees of the same species is well known in the tropics.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following is NOT a specialized root?

Accepted Answer

A)  Branch or lateral roots. 
B)  Food storage root of sweet potato. 
C)  Prop root of corn. 
D)  Contractile roots. 
E)  Propagative roots. 
A)  Branch or lateral roots. 
B)  Food storage root of sweet potato. 
C)  Prop root of corn. 
D)  Contractile roots. 
E)  Propagative roots.

Question 6

The perception of gravity by a root takes place in

Accepted Answer

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. 
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.

Question 7

Cells of the root cap ease the growth of young roots through the soil by __________.

Accepted Answer

A)  secreting slippery lipids like waxes 
B)  producing oils 
C)  producing a mucilaginous lubricant 
D)  forcing a passage between soil particles 
E)  none of these 
A)  secreting slippery lipids like waxes 
B)  producing oils 
C)  producing a mucilaginous lubricant 
D)  forcing a passage between soil particles 
E)  none of these

Question 8

Soil bacteria and fungi are important components of soil because they contribute to soil porosity and release useable minerals by decomposing organic matter.

Accepted Answer

A) True 
 B)False

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

A root hair consists of a short row of cells.

Accepted Answer

A) True 
 B)False

Question 11

Soils in low wet areas tend to contain hardly any organic matter.

Accepted Answer

A) True 
 B)False

Question 12

In a soil profile, topsoil is called the

Accepted Answer

A)  A horizon. 
B)  B horizon. 
C)  C horizon. 
D)  parent material. 
E)  metamorphic quotient. 
A)  A horizon. 
B)  B horizon. 
C)  C horizon. 
D)  parent material. 
E)  metamorphic quotient.

Question 13

How do lateral roots differ from root hairs?

Accepted Answer

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. 
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.

Question 14

In dicot roots the xylem is formed in discrete patches.

Accepted Answer

A) True 
 B)False

Question 15

Haustoria and mycorrhizae are two examples of tap roots.

Accepted Answer

A) True 
 B)False

Question 16

The arrangement of soil particles into groups called aggregates refers to

Accepted Answer

A)  soil structure. 
B)  soil texture. 
C)  parent material. 
D)  micelles. 
E)  soil nutrients. 
A)  soil structure. 
B)  soil texture. 
C)  parent material. 
D)  micelles. 
E)  soil nutrients.

Question 17

The region of elongation is characterized by ______________.

Accepted Answer

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 
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

Question 18

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

Accepted Answer

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. 
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.

Question 19

Root hairs

Accepted Answer

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 
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

Question 20

Pith tissue is absent in dicot roots.

Accepted Answer

A) True 
 B)False

Exam 5: Roots and Soils

The region of cell division in a root is also known as __________.

Cells of the apical meristem

Casparian strips are composed primarily of suberin.

Natural grafting between roots of different trees of the same species is well known in the tropics.

Which of the following is NOT a specialized root?

The perception of gravity by a root takes place in

Cells of the root cap ease the growth of young roots through the soil by __________.

Soil bacteria and fungi are important components of soil because they contribute to soil porosity and release useable minerals by decomposing organic matter.

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

A root hair consists of a short row of cells.

Soils in low wet areas tend to contain hardly any organic matter.

In a soil profile, topsoil is called the

How do lateral roots differ from root hairs?

In dicot roots the xylem is formed in discrete patches.

Haustoria and mycorrhizae are two examples of tap roots.

The arrangement of soil particles into groups called aggregates refers to

The region of elongation is characterized by ______________.

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

Root hairs

Pith tissue is absent in dicot roots.

What Is Plant Biology

The Nature of Life

Cells

Tissues

Stems

Leaves

Flowers, Fruits, and Seeds

Water in Plants

Plant Metabolism

Growth

Meiosis and Alternation of Generation

Genetics

Plant Breeding and Propagation

Evolution

Plant Names and Classification

Domain Kingdombacteria, Domain King-Domarchaea, and Viruses

Kingdom Protista

Kingdom Fungi

Introduction to the Plant Kingdom: Bryophytes

The Seedless Vascular Plants: Ferns and Their Relatives

Introduction to Seed Plants: Gymnosperms

Seed Plants: Angiosperms

Flowering Plants and Civilization

Ecology

Biomes

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