In grasses certain adaxial epidermal cells along the vein modify themselves into large, empty, colourless cells called ________.

(1) Bark

(2) Bulliform cells

(3) Bundle sheath cells

(4) Spongy mesophyll cells

Subtopic:  Monocot Leaf |
 96%
From NCERT
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Bulliform cells help in

(1) Heat resistance

(2) Minimizing water loss

(3) Maintaining ion balance

(4) Mineral acquisition

Subtopic:  Monocot Leaf |
 96%
From NCERT
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The similar size of vascular bundle in monocot leaf is due to

1. Reticulate venation

2. Parallel venation

3. Branched venation

4. Radial venation

Subtopic:  Monocot Leaf |
 90%
From NCERT
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The tissue involved in secondary growth are

(1) Vascular cambium

(2) Cork cambium

(3) Pith

(4) Both A and B

Subtopic:  Activity of Vascular Cambium (OLD NCERT) | Activity of Cork Cambium |
 91%
From NCERT
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In dicot stem the cells of cambium present between primary xylem and primary phloem is the ___________.

(1) Intrafascicular cambium

(2) Interfascicular cambium

(3) Metafascicular cambium

(4) Radial cambium

Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 79%
From NCERT
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When cambial ring becomes active, the cells cut off toward pith mature into

(1) Primary xylem

(2) Secondary xylem

(3) Primary phloem

(4) Secondary phloem

Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 88%
From NCERT
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When cambial rings become active and the cells cut off towards periphery mature into

(1) Secondary phloem

(2) Primary phloem

(3) Primary xylem

(4) Secondary xylem

Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 86%
From NCERT
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The cambium is generally more active on the _________ side than the _________ side.

(1) Inner, outer

(2) Outer, inner

(3) Radial, inner

(4) Radial, outer

Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 92%
From NCERT
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The primary and secondary phloem gets gradually crushed due to the continued formation and accumulation of _________.

(1) Secondary xylem

(2) Resin

(3) Wax

(4) Bark

Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 90%
From NCERT
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In dicot stem, at some places the cambium forms a narrow band of parenchyma which passes through the secondary xylem and secondary phloem in radial direction these are called _________.

(1) Secondary medullary rays

(2) Rays

(3) Primary medullary rays

(4) Tertiary medullary rays

Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 88%
From NCERT
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