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Multiple Choice Quiz
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Parenchyma & Collenchyma
Multiple Choice Quiz
1
In a closely compacted mass, individual parenchyma cells average ______ faces.
A)
6
B)
14
C)
18
D)
21
E)
28
2
Which is
not
true of collenchyma cell walls?
A)
Contain cellulose and lignin
B)
Possess primary pit fields
C)
Lack secondary walls
D)
Contain a high percentage of water
E)
Have unevenly thickened primary walls.
3
Which is
not
true of parenchyma cells?
A)
They are essentially isodiametric.
B)
Often serve as storage tissue.
C)
May be converted into collenchyma or sclerenchyma.
D)
They constitute the type of cells most commonly found in more primitive plants.
E)
They provide an effective transport and support mechanism for the plant.
4
A simple tissue is:
A)
incapable of transforming into another cell type.
B)
composed of small cells.
C)
comprised of only one cell type.
D)
always isodiametric.
E)
not found in higher plants.
5
Collenchyma cells with thickened walls adjacent to intercellular spaces is termed:
A)
angular.
B)
annular.
C)
lacunar.
D)
lamellar.
E)
plate.
6
Cell walls of collenchyma cells are flexible due to:
A)
a high lignin content.
B)
their elastic nature due to contractile proteins.
C)
irregular secondary thickenings.
D)
a helicoidal arrangement of cellulose microfibrils.
E)
layers that slide past one another.
7
A cross-section preparation of celery collenchyma viewed with light microscopy may not show significant cell wall thickenings due to:
A)
insufficient magnification—electron microscopy is required.
B)
thickenings can only be observed in a longitudinal view.
C)
loss of water may cause the walls to shrink or collapse.
D)
celery does not contain collenchyma.
E)
collenchyma does not possess cell wall thickenings.
8
Lamellar collenchyma shows thickenings:
A)
on the tangential walls.
B)
on the radial walls.
C)
uniformly around the cell.
D)
adjacent to intercellular spaces.
E)
at the ends of elongated cells.
9
The type of pits found in collenchyma are typically:
A)
bordered pits.
B)
pits with pit membranes.
C)
half-bordered pits.
D)
primary pit fields.
E)
none, collenchyma cells have no pits.
10
A feature associated with parenchyma cells:
A)
small or no vacuoles.
B)
a highly elongated cellular axis.
C)
totipotency.
D)
irregularly thickened cell walls.
E)
lack of plasmodesmata.
2003 McGraw-Hill Higher Education
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2003 McGraw-Hill Higher Education