Question 1

The sequence of regions in a growing root, beginning immediately behind the rootcap, is:

Accepted Answer

A) elongation, maturation, cell division. 
B) cell division, maturation, elongation. 
C) cell division, elongation, maturation. 
D) elongation, cell division, maturation. 
E) maturation, elongation, cell division. 
A) elongation, maturation, cell division. 
B) cell division, maturation, elongation. 
C) cell division, elongation, maturation. 
D) elongation, cell division, maturation. 
E) maturation, elongation, cell division.

Question 2

The lateral rootcap receives gravity.

Accepted Answer

A) True 
 B)False

Question 3

Protophloem and protoxylem mature in the:

Accepted Answer

A) region of cell division. 
B) region of elongation. 
C) region of maturation. 
D) quiescent center. 
E) area between the regions of cell division and elongation. 
A) region of cell division. 
B) region of elongation. 
C) region of maturation. 
D) quiescent center. 
E) area between the regions of cell division and elongation.

Question 4

Which of the following statements about the quiescent center is FALSE?

Accepted Answer

A) It is located a short distance behind the apical meristem. 
B) It may play an important role in the organization and development of the root. 
C) It is a region that was mitotically active early in root development. 
D) It is a relatively inactive region of the mature root apical meristem. 
E) Quiescent centers isolated from maize can form whole roots in culture without first forming callus. 
A) It is located a short distance behind the apical meristem. 
B) It may play an important role in the organization and development of the root. 
C) It is a region that was mitotically active early in root development. 
D) It is a relatively inactive region of the mature root apical meristem. 
E) Quiescent centers isolated from maize can form whole roots in culture without first forming callus.

Question 5

The vascular cambium of roots produces secondary xylem toward the outside and secondary phloem toward the inside.

Accepted Answer

A) True 
 B)False

Question 6

Suberin lamellae, such as those found in some older roots, are alternating layers of:

Accepted Answer

A) lignin and cellulose. 
B) cellulose and wax. 
C) suberin and wax. 
D) suberin and lignin. 
E) suberin and cellulose. 
A) lignin and cellulose. 
B) cellulose and wax. 
C) suberin and wax. 
D) suberin and lignin. 
E) suberin and cellulose.

The sequence of regions in a growing root, beginning immediately behind the rootcap, is:

The lateral rootcap receives gravity.

Protophloem and protoxylem mature in the:

Which of the following statements about the quiescent center is FALSE?

The vascular cambium of roots produces secondary xylem toward the outside and secondary phloem toward the inside.

Suberin lamellae, such as those found in some older roots, are alternating layers of:

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters

Exam 24: The Root: Structure and Development

The sequence of regions in a growing root, beginning immediately behind the rootcap, is:

The lateral rootcap receives gravity.

Protophloem and protoxylem mature in the:

Which of the following statements about the quiescent center is FALSE?

The vascular cambium of roots produces secondary xylem toward the outside and secondary phloem toward the inside.

Suberin lamellae, such as those found in some older roots, are alternating layers of:

Botany: an Introduction

The Molecular Composition of Plant Cells

The Plant Cell and the Cell Cycle

The Movement of Substances Into and Out of Cells

The Flow of Energy

Respiration

Photosynthesis, Light, and Life

Sexual Reproduction and Heredity

The Chemistry of Heredity and Gene Expression

Recombinant Dna Technology, Plant Biotechnology, and Genomics

The Process of Evolution

Systematics: the Science of Biological Diversity

Prokaryotes and Viruses

Fungi

Protists: Algae and Heterotrophic Protists

Bryophytes

Seedless Vascular Plants

Gymnosperms

Introduction to the Angiosperms

Evolution of the Angiosperms

Plants and People

Early Development of the Plant Body

Cells and Tissues of the Plant Body

The Shoot: Primary Structure and Development

Secondary Growth in Stems

Regulating Growth and Development: the Plant Hormones

External Factors and Plant Growth

Plant Nutrition and Soils

The Movement of Water and Solutes in Plants

The Dynamics of Communities and Ecosystems

Global Ecology

Filters