381.
Polyarch and exarch condition of found in
A
Monocot stem
B
Monocot root
C
Dicot stem
D
Dicot root
Answer :
Monocot root
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382.
Cork cambium is
A
Always primary meristem
B
Always secondary meristem
C
May be secondary or primary meristem
D
Partly primary & Partly secondary meristem
Answer :
Always secondary meristem
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383.
Phloem of Angiosperm is different from that of pteridophytes and gymnosperm in
A
The absence of enzymes
B
Presence of endocytosis
C
Presence of companion cells
D
None of the above
Answer :
Presence of companion cells
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384.
Laticiferous vessels instead of laticiferous cells are found in
A
Euphorbia
B
Calotropis
C
Poppy
D
Nerium
Answer :
Poppy
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385.
Vessels differ from tracheids
A
In being living
B
In being derived from a single cell
C
In having vertical row of cells with cross walls dissolved
D
Because they conduct water
Answer :
In having vertical row of cells with cross walls dissolved
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386.
The largest leaves are found in
A
Musa paradisiaca
B
Victoria regia
C
Nelumbium nucifera
D
Amorophophallus
Answer :
Victoria regia
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387.
Collenchyma differs from sclerenchyma in
A
Retaining protoplasm at maturity
B
Having thick walls
C
Having a wide lumen
D
Being meristematic
Answer :
Retaining protoplasm at maturity
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388.
In anticlinal divisions, the plane of division is
A
Parallel to long axis of cell
B
Right angle to long axis of cell
C
Oblique to long axis of cell
D
Equatorial
Answer :
Right angle to long axis of cell
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389.
Plastids absent in
A
Parenchyma
B
Collenchyma
C
Sclerenchyma
D
All of the above
Answer :
Sclerenchyma
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390.
"Bast-fibers" obtained from which part of woody stem
A
Cork
B
Cortex
C
Xylem
D
Phloem
Answer :
Phloem
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