Question 1

Knots are branch bases that have become covered over by new wood.

Accepted Answer

A) True 
 B)False

Question 2

Discrete patches of xylem and phloem found in herbaceous dicot stems are called

Accepted Answer

A)  lenticels. 
B)  steles. 
C)  vascular bundles. 
D)  annual rings. 
E)  tyloses. 
A)  lenticels. 
B)  steles. 
C)  vascular bundles. 
D)  annual rings. 
E)  tyloses.

Question 3

The difference between the inner bark and the outer bark is that the outer bark is aged inner bark tissue.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following statements pertaining to monocots is true?

Accepted Answer

A)  They have no vascular cambium. 
B)  Their vascular bundles are arranged in a ring. 
C)  Most of them are woody. 
D)  They have a definite cortex and pith. 
E)  Their stems generally have conspicuous cork. 
A)  They have no vascular cambium. 
B)  Their vascular bundles are arranged in a ring. 
C)  Most of them are woody. 
D)  They have a definite cortex and pith. 
E)  Their stems generally have conspicuous cork.

Question 5

In woody dicots, which of the following may eventually be crushed as secondary growth occurs?

Accepted Answer

A)  secondary xylem 
B)  cork 
C)  cork cambium 
D)  cortex 
E)  vascular cambium 
A)  secondary xylem 
B)  cork 
C)  cork cambium 
D)  cortex 
E)  vascular cambium

Question 6

Which of the following gives rise to primary tissues?

Accepted Answer

A)  procambium 
B)  phelloderm 
C)  cork cambium 
D)  vascular cambium 
E)  phloem rays 
A)  procambium 
B)  phelloderm 
C)  cork cambium 
D)  vascular cambium 
E)  phloem rays

Question 7

Rays consist primarily of

Accepted Answer

A)  dead cells. 
B)  long-lived parenchyma. 
C)  tracheids. 
D)  vessel elements. 
E)  sieve tubes. 
A)  dead cells. 
B)  long-lived parenchyma. 
C)  tracheids. 
D)  vessel elements. 
E)  sieve tubes.

Question 8

The tyloses that prevent conduction of any kind in wood are most frequently found in

Accepted Answer

A)  laticifers. 
B)  sieve-tube elements. 
C)  resin canals. 
D)  cork cells. 
E)  xylem cells. 
A)  laticifers. 
B)  sieve-tube elements. 
C)  resin canals. 
D)  cork cells. 
E)  xylem cells.

Question 9

Which of the following would NOT be part of a stele?

Accepted Answer

A)  cortex 
B)  primary xylem 
C)  primary phloem 
D)  pith 
E)  all of these answers are correct 
A)  cortex 
B)  primary xylem 
C)  primary phloem 
D)  pith 
E)  all of these answers are correct

Question 10

The bases of lost branches that have become covered over with new annual rings of wood are called

Accepted Answer

A)  veneer. 
B)  traces. 
C)  seasoned wood. 
D)  knots. 
E)  lignum vitae. 
A)  veneer. 
B)  traces. 
C)  seasoned wood. 
D)  knots. 
E)  lignum vitae.

Question 11

The leaf arrangement of a stem with one leaf at each node is called ____________.

Accepted Answer

A)  whorled 
B)  decussate 
C)  opposite 
D)  scattered 
E)  alternate 
A)  whorled 
B)  decussate 
C)  opposite 
D)  scattered 
E)  alternate

Question 12

Leaves and buds are attached to the stem at the

Accepted Answer

A)  internodes. 
B)  axils. 
C)  apex. 
D)  nodes. 
E)  sides. 
A)  internodes. 
B)  axils. 
C)  apex. 
D)  nodes. 
E)  sides.

Question 13

Older, nonfunctioning xylem is called

Accepted Answer

A)  sapwood. 
B)  summer wood. 
C)  springwood. 
D)  winter wood. 
E)  heartwood. 
A)  sapwood. 
B)  summer wood. 
C)  springwood. 
D)  winter wood. 
E)  heartwood.

Question 14

The pattern of growth in a woody stem that allows someone to determine the age of the stem results from

Accepted Answer

A)  growth of the apical meristem 
B)  growth of the cork cambium 
C)  production of spring and summer wood by vascular cambium 
D)  development of knots 
E)  all of these answers are correct 
A)  growth of the apical meristem 
B)  growth of the cork cambium 
C)  production of spring and summer wood by vascular cambium 
D)  development of knots 
E)  all of these answers are correct

Question 15

Phloem rays appear to be continuous with xylem rays.

Accepted Answer

A) True 
 B)False

Question 16

Cells produced by the vascular cambium do NOT include

Accepted Answer

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

Question 17

Primary meristems are produced by cell division in the _____________.

Accepted Answer

A)  shoot apical meristem 
B)  leaf primordia 
C)  vascular cambium 
D)  cork cambium 
E)  ray initials 
A)  shoot apical meristem 
B)  leaf primordia 
C)  vascular cambium 
D)  cork cambium 
E)  ray initials

Question 18

The procambium produces

Accepted Answer

A)  secondary xylem and phloem. 
B)  cortex. 
C)  pith. 
D)  epidermis. 
E)  primary xylem and phloem. 
A)  secondary xylem and phloem. 
B)  cortex. 
C)  pith. 
D)  epidermis. 
E)  primary xylem and phloem.

Question 19

Wood cells are composed primarily of cellulose and

Accepted Answer

A)  lignin. 
B)  pectin. 
C)  starch. 
D)  glucose. 
E)  suberin. 
A)  lignin. 
B)  pectin. 
C)  starch. 
D)  glucose. 
E)  suberin.

Question 20

Most stem tips have caps over them that protect them while they are growing.

Accepted Answer

A) True 
 B)False

Exam 6: Stems

Knots are branch bases that have become covered over by new wood.

Discrete patches of xylem and phloem found in herbaceous dicot stems are called

The difference between the inner bark and the outer bark is that the outer bark is aged inner bark tissue.

Which of the following statements pertaining to monocots is true?

In woody dicots, which of the following may eventually be crushed as secondary growth occurs?

Which of the following gives rise to primary tissues?

Rays consist primarily of

The tyloses that prevent conduction of any kind in wood are most frequently found in

Which of the following would NOT be part of a stele?

The bases of lost branches that have become covered over with new annual rings of wood are called

The leaf arrangement of a stem with one leaf at each node is called ____________.

Leaves and buds are attached to the stem at the

Older, nonfunctioning xylem is called

The pattern of growth in a woody stem that allows someone to determine the age of the stem results from

Phloem rays appear to be continuous with xylem rays.

Cells produced by the vascular cambium do NOT include

Primary meristems are produced by cell division in the _____________.

The procambium produces

Wood cells are composed primarily of cellulose and

Most stem tips have caps over them that protect them while they are growing.

What Is Plant Biology

The Nature of Life

Cells

Tissues

Roots and Soils

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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