351.
Casparian bands are present in
A
Endodermis
B
Pericycle
C
Periderm
D
Coleoptile
Answer :
Endodermis
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352.
A bicollateral vascular bundle is characterised by
A
Phloem being sandwiched between xylem
B
Transverse splitting of vascular bundle
C
Longitudinal splitting of vascular bundle
D
Xylem being sandwiched between phloem
Answer :
Xylem being sandwiched between phloem
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353.
Senescence and death are essential in the function of
A
Sieve tubes
B
Companion cells
C
A and B both
D
Xylem and Sclerenchyma cells
Answer :
Xylem and Sclerenchyma cells
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354.
Closed vascular bundles lack
A
Ground tissue
B
conjunctive tissue
C
Cambium
D
Pith
Answer :
Cambium
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355.
Water containing cavities in vascular bundles are found in:
A
Sunflower
B
Maize
C
Cycas
D
Pinus
Answer :
Maize
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356.
Which of the following does not contain pith
A
Siphonostele
B
Protostele
C
Eustele
D
None of the above
Answer :
Protostele
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357.
Cork is an excellent material for making bottle stopper because it is
A
Cheap
B
Easily available
C
Air tight
D
Light
Answer :
Air tight
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358.
In true hydrophytes, the stomata are present on
A
Upper epidermis
B
Lower epidermis
C
None of these side
D
Both side
Answer :
None of these side
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359.
In the leaf, vascular bundles are found in
A
Veins
B
Palisade tissue
C
Upper epidermis
D
Lowerepidermis
Answer :
Veins
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360.
Exarch and polyarch xylem strands are found in
A
Monocot stem
B
Dicot stem
C
Monocot root
D
Dicot root
Answer :
Monocot root
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