141.
Read the different components from (A) to (D) in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem. A
(A), (B), (D), (C)
B
(D), (A), (C), (B)
C
(D), (C), (A), (B)
D
(C), (D), (B), (A)
Answer :
(D), (A), (C), (B)
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142.
In a dicot root, the arrangement of xylem and phloem is A
Collateral
B
Circular
C
Radial
D
None of the above
Answer :
Radial
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143.
Tracheids differ from other tracheary elements in: A
having casparian strips
B
being imperforate
C
lacking nucleus
D
being lignified
Answer :
being imperforate
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144.
A wood with scattered parenchyma is called A
Paratracheal
B
Aprotracheal
C
Syntracheal
D
None of the above
Answer :
Aprotracheal
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145.
The quiescent centre in the root meristem serves as a A
Site for storage of food which is utilized during maturation
B
Reservoir of growth hormones
C
Reserve for replenishment of damaged cells of the meristem
D
Region for absorption of water
Answer :
Reserve for replenishment of damaged cells of the meristem
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146.
Pith and cortex do not differentiate in A
monocot stem
B
dicot stem
C
monocot root
D
dicot root
Answer :
monocot stem
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147.
Longest fibres are found in A
Jute
B
Cotton
C
Sunn Hemp
D
Coir
Answer :
Jute
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148.
Which one is responsible from radial conduction of water and food in woody stems A
Vessels
B
Vascular rays
C
Endodermis
D
Xylem fibres
Answer :
Vascular rays
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149.
Compact wood with little parenchyma is termed A
Heart wood
B
Hard wood
C
Pycnoxylic wood (4) Manoxylic wood
D
Manoxylic wood
Answer :
Pycnoxylic wood (4) Manoxylic wood
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150.
Histogens are components of A
Apical meristem
B
Intercalary meristem
C
Lateral meristem
D
Secondary meristem
Answer :
Apical meristem
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