Axillary bud:
I: is constituted by some cells ‘left behind’ from shoot apical meristem during the formation of leaves and elongation of stems.
II. is present in the axils of leaves and is capable of forming a branch or a flower.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect

Subtopic:  Meristematic Tissue:Classification (OLD NCERT) |
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Identify the incorrect matching with respect to anatomy of dicot and monocot leaves?
Character Dicot[Dorsiventral] Monocot [Isobilateral]
1. Presence of stomata More on adaxial epidermis More on abaxial epidermis
2. Mesophyll Differentiated into palisade and spongy parenchyma Not differentiated into palisade and spongy parenchyma
3. Venation Mostly reticulate Mostly parallel
4. Size of vascular bundle Dependent on the size of veins Near similar size except in main veins
Subtopic:  Monocot Leaf |
 90%
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What is true regarding bulliform cells seen in grasses?
1. they are certain adaxial epidermal cells that when flaccid make the leaves curl inwards
2. they are certain abaxial epidermal cells that when flaccid make the leaves curl inwards
3. they are certain adaxial epidermal cells that when turgid make the leaves curl inwards
4. they are certain abaxial epidermal cells that when turgid make the leaves curl inwards
Subtopic:  Monocot Leaf |
 74%
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The parallel venation in monocot leaves is reflected in the:
1. wide variations in size of vascular bundles in the main veins
2. wide variations in size of vascular bundles except in the main veins
3. near similar size of vascular bundles in the main veins
4. near similar size of vascular bundles except in the main veins
Subtopic:  Monocot Leaf |
 70%
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Secondary growth:
1. occurs in all angiosperms
2. is accomplished by the procambium
3. is accomplished, at least in part, by the vascular cambium
4. brings about an increase in the height of the plant
Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 61%

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Interfascicular cambium in dicot stems is formed from the cells of:
1. pericycle 2. medullary rays
3. endodermis 4. hypodermis
Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
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The cambial ring in the dicot stem cuts:
1. cells that mature into secondary xylem towards pith and into secondary phloem towards periphery
2. cells that mature into secondary xylem towards periphery and into secondary phloem towards pith
3. cells that mature into primary xylem towards pith and into primary phloem towards periphery
4. cells that mature into primary xylem towards periphery and into primary phloem towards pith
Subtopic:  Activity of Cork Cambium |
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Consider the given two statements:
I.  In secondary growth in dicot stems, the amount of secondary phloem produced is more than secondary xylem
II.  The cambium is generally more active on the outer side than the inner
 
1. Both I and II are true and II explains I
2. Both I and II are true but II does not explain I
3. I is true but II is false
4. Both I and II are false
Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
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In a four-year-old stem, where would you expect to find the oldest secondary xylem?
1. adjacent to the pith
2. just inside the vascular cambium
3. just outside the vascular cambium
4. immediately adjacent to the primary phloem
Subtopic:  Activity of Secondary Xylem (OLD NCERT) |
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At some places the cambium forms a narrow band of parenchyma, which passes through the secondary xylem and the secondary phloem in radial directions. These are called as:
1. Interfascicular cambium
2. Secondary medullary rays
3. Cork cambium
4. Intrafascicular cambium
Subtopic:  Activity of Vascular Cambium (OLD NCERT) |
 79%
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