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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 |
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. |
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 |
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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