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Biology 11 Chapter - 10
Form and Function in Plants -20
1.
Which of the following is closest to the centre of a woody stem?
a) vasular cambium
b) young xylem
c) old phloem
d) old xylem
2.
Symplast is the movement of water through
a) vacuoles
b) cell walls
c) cytoplasm of cells
d) inter spaces
3.
Guard cells are the only cells of epidermis, which have
a) vacuole
b) chloroplasts
c) cytoplasm
d) leucoplasts
4.
The sugar moves through phloem is mostly in the form of
a) glucose
b) sucrose
c) maltose
d) lactose
5.
Succulent tissues are formed in
a) hydrophytes
b) thallophytes
c) mesophyll
d) xerophytes
6.
Why does a plant auxin produce different effects on the growth of a root
and of a shoot?
a) gravity affects the action of the auxin
b) the growth rates of shoot and roots differ
c) the shoot and root respond differently to similar auxin concentrations
d) light effects the action of the auxin
7.
Collenchyma is a supporting tissue in
a) seeds
b) seedlings
c) shrubs
d) trees
8.
The phenomenon of growth includes
a) cell differentiation
b) cell elongation
c) cell maturation
d) cell decomposition
9.
A researcher, who wants to study the composition of a plant’s sap, inserts
a capillary tube into the phloem. What causes the sap to flow out of the
tube?
a) capillarity
b) hydrostatic pressure
c) root pressure
d) transpiration stream
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