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Biology 12 Chapter 16 - Support and Movements - 4
1.
An increasein plant girth due to vascular cambium and cork cambium is called?
Vascular growth
Primary growth
Secondary growth
Apical growth
2.
Secondary growth occurs due to cell division in?
Apical meristem
Vascular cambium and xylem
Xylem and phloem
Vascular cambium and cork camium
3.
A cylider of actively dividing cells between primary xylem and primary phloem?
Sap wood
Heart wood
Vascular cambium
Cork cambium
4.
Which of the two tissues rise from vascular cambium?
Cork cambium and secondary xylem
Secondary xylem and secondary phloem
Primary xylem and secondary phloem
Primary xylem and primary phloem
5.
Where secondary xylem appears?
Next to outer surface of the vascular cambium
Back to outer surface of the vascular cambium
Back to inner surface of the vascular cambium
Next to inner surface of the vascular cambium
6.
Where secondary phloem appears?
Outer to vascular cambium
Outer to cork cambium
Within vascular cambium
Inner to vascular cambium
7.
Secondary xylem increase in stem ………….?
Colour
Age
Thickness
Growth
8.
How can collect the age of the old trees?
By counting of rings at base of trunk
By counting leaves
By annual yield
With the help of colour indicator
9.
Water conducting and active portion of wood is called?
Heart wood
Hard wood
Sapwood
Soft wood
10.
The inactive non-conducting wood is called?
Sapwood
Soft wood
Heart wood
Hard wood
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