271.
The tissue responsible for translocation of food material is
A
Parenchyma
B
Sieve tubes
C
Vessels
D
Fibres
Answer :
Sieve tubes
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272.
Porous wood contains
A
Fibres
B
Sieve tubes
C
Tracheids
D
Vessels
Answer :
Vessels
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273.
Vessels are found in
A
all Angiosperms and some gymnosperms
B
most of Angiosperms and few gymnosperms
C
all Angiosperms, all gymnosperms and some pteriodophyta
D
all pteridophyta
Answer :
most of Angiosperms and few gymnosperms
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274.
An open collateral bundle in one in which
A
Xylem and phloem are separated by cambium
B
Xylem and phloem lie side by side
C
Cambium occurs on the outside of bundle
D
Cambium does not occur in the bundle
Answer :
Xylem and phloem are separated by cambium
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275.
In quiescent zone, DNA content is
A
High
B
Low
C
Very high
D
Balanced
Answer :
Low
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276.
Four radial vascular bundles are found in
A
dicot root
B
monocot root
C
dicot stem
D
monocot stem
Answer :
dicot root
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277.
In a ring girdled plant:
A
The root dies first
B
The shoot and root die together
C
Neither root nor shoot will die
D
The shoot dies first
Answer :
The root dies first
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278.
Which one of the following is resistant to enzyme action?
A
Cork
B
Wood fibre
C
Pollen exine
D
Leaf cuticle
Answer :
Pollen exine
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279.
Which of following statement is true about parenchyma tour cells
A
Presence of thickening at corner
B
Presence of uniform thickening
C
Presence of intercellular space
D
Presence of lignified wall
Answer :
Presence of intercellular space
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280.
The balloon like outgrowths of parenchyma in the lumen of a vessel are known as
A
Histogen
B
Tyloses
C
Phellogen
D
Tunica
Answer :
Tyloses
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