Question 1

Which of the following is a true statement?

Accepted Answer

A)  Flowers may have secondary growth.
B)  Secondary growth is a common feature of eudicot leaves.
C)  Secondary growth is produced by both the vascular cambium and the cork cambium.
D)  Primary growth and secondary growth alternate in the life cycle of a plant.
E)  Plants with secondary growth are typically the smallest ones in an ecosystem.F) A) and E)
G) None of the above

Question 2

Which of the following would not be seen in a cross section through the woody part of a root?

Accepted Answer

A)  sclerenchyma cells
B)  sieve-tube elements
C)  parenchyma cells
D)  root hairsE) B) and C)
F) A) and C)

Question 3

Annual rings in woody plant stems and roots represent the

Accepted Answer

A)  primary phloem of spring and summer.
B)  primary and secondary xylem of summer.
C)  secondary xylem of spring and summer.
D)  secondary phloem of spring and summer.
E)  primary and secondary xylem of spring.F) B) and E)
G) A) and C)

Question 4

Vascular cambium in eudicot stems produce

Accepted Answer

A)  dermal and ground tissue.
B)  lateral tissues.
C)  pith.
D)  secondary xylem and phloem.
E)  shoots and roots.F) A) and E)
G) A) and D)

Question 5

Which type of roots support tall and top-heavy plants?

Accepted Answer

A)  buttress roots
B)  storage roots
C)  tap roots
D)  pneumatophores
E)  prop rootsF) A) and C)
G) A) and B)

Question 6

The lateral root originates in which of the following parts of the root?

Accepted Answer

A)  xylem
B)  phloem
C)  endodermis
D)  pericycle
E)  peridermF) B) and E)
G) B) and C)

Question 7

Which of the plant organs pays a pivotal role on dissipating heat?

Accepted Answer

A)  stem
B)  root
C)  leaf
D)  tuber
E)  stolonF) C) and D)
G) B) and E)

Question 8

Which of the following responses is the correct order of tissues from the center to the periphery (outside) of a two-year-old dicot stem cross section?

Accepted Answer

A)  primary xylem,secondary xylem,vascular cambium,secondary phloem,secondary xylem
B)  secondary xylem,secondary phloem,vascular cambium,secondary xylem,primary xylem
C)  primary phloem,primary xylem,secondary xylem,secondary phloem,vascular cambium
D)  secondary phloem,secondary xylem,primary xlem,primary phloem,vascular cambium
E)  vascular cambium,primary xylem,secondary xylem,primary phloem,secondary phloemF) B) and E)
G) D) and E)

Question 9

Axillary buds

Accepted Answer

A)  are initiated by the cork cambium.
B)  have dormant meristematic cells.
C)  are composed of a series of internodes lacking nodes.
D)  grow immediately into shoot branches.
E)  do not form a vascular connection with the primary shoot.F) A) and B)
G) B) and D)

Question 10

Arrange the following tissues in an order from the upper surface to the middle area of a leaf cross section.
i.epidermis
ii.xylem
iii.palisade mesophyll
iv.spongy mesophyll

Accepted Answer

A)  i,ii,iii,iv
B)  ii,i,iv,iii
C)  iii,i,ii,iv
D)  iv,iii,i,ii
E)  i,iii,iv,iiF) B) and E)
G) A) and D)

Question 11

Adventitious roots in monocots are very helpful in coastal ecosystems to reduce

Accepted Answer

A)  water absorption.
B)  evaporation.
C)  soil erosion.
D)  nutrient absorption.
E)  decomposition.F) A) and C)
G) B) and D)

Question 12

The secondary growth in stems and roots of woody plants produced by the

Accepted Answer

A)  intercalary meristem.
B)  lateral meristem.
C)  apical meristem.
D)  axillary meristem.E) A) and D)
F) B) and D)

Question 13

Which tissue is responsible for the recovery and rapid growth of damaged leaves of grass grazed by sheep in a pasture?

Accepted Answer

A)  parenchyma
B)  apical meristem
C)  axillary buds
D)  mesophyll
E)  intercalary meristemF) A) and B)
G) A) and C)

Question 14

Mature cork cells deposit a waxy substance called ________ in cell walls.

Accepted Answer

A)  suberin
B)  lignin
C)  chitin
D)  cellulose
E)  pectinF) B) and C)
G) C) and E)

Question 15

Plants contain meristems whose major function is to

Accepted Answer

A)  attract pollinators.
B)  absorb ions.
C)  photosynthesize.
D)  produce more cells.
E)  produce flowers.F) A) and C)
G) B) and D)

Question 16

The vascular bundle in the shape of a single central cylinder in a root is called the

Accepted Answer

A)  cortex.
B)  stele.
C)  endodermis.
D)  periderm.
E)  pith.F) A) and C)
G) B) and C)

Question 17

A plant has the following characteristics: a taproot system,several growth rings evident in a cross section of the stem,and a layer of bark around the outside.Which of the following best describes the plant?

Accepted Answer

A)  herbaceous eudicot
B)  woody eudicot
C)  woody monocot
D)  herbaceous monocot
E)  woody annualF) D) and E)
G) A) and B)

Question 18

Xylem,a vascular tissue,performs which of the following functions?

Accepted Answer

A)  storage of food
B)  photosynthesis
C)  aerobic respiration
D)  transport of water and minerals
E)  transport of foodF) A) and B)
G) B) and E)

Question 19

Which of the following cells in a dicot stem is only one cell thick?

Accepted Answer

A)  cortex
B)  pith
C)  secondary xylem
D)  vascular cambium
E)  phloemF) A) and B)
G) A) and C)

Question 20

Arrange the following steps of cell differentiation during plant growth (in length) in the correct sequence.
i.cell division in primary meristem
ii.cell division in apical meristem
iii.differentiated cells
iv.growing cells in primary meristem

Accepted Answer

A)  i,ii,iii,iv
B)  ii,i,iv,iii
C)  ii,iii,i,iv
D)  i,iii,ii,iv
E)  iii,ii,iv,iiF) B) and D)
G) All of the above

Exam 28: Plant Structure and Growth

Arrange the following tissues in an order from the upper surface to the middle area of a leaf cross section. i.epidermis ii.xylem iii.palisade mesophyll iv.spongy mesophyll

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Arrange the following steps of cell differentiation during plant growth (in length) in the correct sequence. i.cell division in primary meristem ii.cell division in apical meristem iii.differentiated cells iv.growing cells in primary meristem

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Which of the following responses is the correct order of tissues from the center to the periphery (outside) of a two-year-old dicot stem cross section?

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Which tissue is responsible for the recovery and rapid growth of damaged leaves of grass grazed by sheep in a pasture?

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A plant has the following characteristics: a taproot system,several growth rings evident in a cross section of the stem,and a layer of bark around the outside.Which of the following best describes the plant?

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Which of the following would not be seen in a cross section through the woody part of a root?

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The lateral root originates in which of the following parts of the root?

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The vascular bundle in the shape of a single central cylinder in a root is called the

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Plants contain meristems whose major function is to

Correct AnswerverifiedShow Answer

Which of the plant organs pays a pivotal role on dissipating heat?

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Vascular cambium in eudicot stems produce

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Mature cork cells deposit a waxy substance called ________ in cell walls.

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Which of the following is a true statement?

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Annual rings in woody plant stems and roots represent the

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Which type of roots support tall and top-heavy plants?

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Which of the following cells in a dicot stem is only one cell thick?

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Adventitious roots in monocots are very helpful in coastal ecosystems to reduce

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The secondary growth in stems and roots of woody plants produced by the

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Axillary buds

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Xylem,a vascular tissue,performs which of the following functions?

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