521.
Which of the following tissues from the main bulk of storage organ
A
Parenchyma
B
Collenchyma
C
Scelenchyma
D
Aerenchyma
Answer :
Parenchyma
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522.
Active divisions occur in the cells of
A
Xylem
B
Phloem
C
Cambium
D
Collenchyma
Answer :
Cambium
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523.
Bark includes all the tissues
A
Lying outside the vascular cambium
B
Formed by vascular cambium
C
Formed by phellogen
D
Phellem & Phelloderm
Answer :
Lying outside the vascular cambium
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524.
Quiescent centre is present in
A
Shoot apex
B
Root apex
C
A and B both
D
Meristematic tissue
Answer :
Root apex
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525.
The cells of the quiescent centre are characterised by
A
dividing regularly to add to tunica
B
having dense cytoplasm and prominent nuclei
C
having light cytoplasm and small nuclei
D
dividing regularly to add to the corpus
Answer :
having light cytoplasm and small nuclei
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526.
Vascular bundles in Pinus stem are
A
Radial
B
Collateral and closed
C
Collateral and open
D
Bicollateral
Answer :
Collateral and open
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527.
A major characteristic of the monocot root is the presence of:
A
Scattered vascular bundles
B
Vasculature without cambium
C
Cambium sandwiched between phloem and xylem along the radius
D
Open vascular bundles
Answer :
Vasculature without cambium
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528.
The position of protoxylem in leaf is
A
Adaxial
B
Abaxial
C
Surrounded by metaxylem
D
Lateral
Answer :
Adaxial
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529.
Which of the following plant has important use in the production of fibre and oil
A
Hibiscus
B
Crotalaria
C
Malva
D
Abutilon
Answer :
Hibiscus
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530.
Commercial cork is obtained from
A
Berberis/Barberry
B
Salix/Willow
C
Quercus/Oak
D
Betula/Birch
Answer :
Quercus/Oak
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