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Q. No.Identify the incorrect comparison between monocots and dicots in general:
| Character | Monocots | Dicots | |
| 1. | Leaves | Parallel venation | Reticulate venation |
| 2. | Roots | Primary root of short duration, replaced by adventitial roots forming fibrous or fleshy root systems | Develops from the radicle. Primary root often persists forming strong tap roots and secondary roots |
| 3. | Plant stem: Vascular bundles | Ring of primary bundles with cambium, differentiated into cortex and stele | Numerous scattered bundles in ground parenchyma, cambium mostly absent, no differentiation between cortical and stelar regions |
| 4. | Flowers | Parts in threes (trimerous) or multiples of three | Fours (tetramerous) or fives (pentamerous) |
Subtopic: Anatomy of Root | Dicot Stem | Monocot Stem | Dicot Leaf | Monocot Leaf |
86%
From NCERT
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Consider the given two statements:
| Assertion(A) | Monocotyledonous roots do not undergo any secondary growth. |
| Reason (R): | There are usually more than six (polyarch) xylem bundles in the monocot root. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain the (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) correctly explains the (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Anatomy of Root |
85%
From NCERT
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Identify the correct statements:
I: Guard cells are dumbbell shaped in dicots
II: Initiation of lateral roots and vascular cambium during the secondary growth takes place in pericycle cells in dicot roots.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
I: Guard cells are dumbbell shaped in dicots
II: Initiation of lateral roots and vascular cambium during the secondary growth takes place in pericycle cells in dicot roots.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Anatomy of Root |
78%
From NCERT
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Which of the following is an anatomical feature of a dicot root?
1. Presence of a single layer of cortex.
2. Radial arrangement of vascular bundles.
3. Lack of secondary growth.
4. Scattered vascular bundles.
1. Presence of a single layer of cortex.
2. Radial arrangement of vascular bundles.
3. Lack of secondary growth.
4. Scattered vascular bundles.
Subtopic: Anatomy of Root |
87%
From NCERT
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The anatomy of a dicot root typically includes:
1. A single layer of epidermis with root hairs
2. A large central pith
3. Scattered vascular bundles
4. Secondary growth absent
1. A single layer of epidermis with root hairs
2. A large central pith
3. Scattered vascular bundles
4. Secondary growth absent
Subtopic: Anatomy of Root |
84%
From NCERT
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What does the term 'stele' refer to in plant anatomy?
| 1. | The center of the stem or root containing xylem, phloem, and pith |
| 2. | The outer protective layer of the stem or root |
| 3. | The arrangement of vascular bundles in the leaf |
| 4. | The terminal part of the root that absorbs water |
Subtopic: Anatomy of Root |
92%
From NCERT
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