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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 |
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Which of the following would be true regarding the anatomy of a monocot leaf?
| 1. | Bulliform cells are absent from the epidermis |
| 2. | Veins form a network |
| 3. | Mesophyll is well differentiated into these parts |
| 4. | Mesophyll is not differentiated into palisade and spongy parenchyma |
Subtopic: Monocot Leaf |
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What is a typical feature of isobilateral leaves?
| 1. | Stomata present on both upper and lower surfaces |
| 2. | Stomata present only on the lower surface |
| 3. | Large air spaces are present within the spongy mesophyll |
| 4. | Differentiated into palisade and spongy mesophyll only on the upper side |
Subtopic: Monocot Leaf |
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What function do bulliform cells perform in monocot leaves?
| 1. | Transport of nutrients |
| 2. | Photosynthesis |
| 3. | Regulation of leaf rolling and unrolling |
| 4. | Protection from herbivores |
Subtopic: Monocot Leaf |
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Which of the following is a characteristic feature of monocot leaves compared to dicot leaves?
| 1. | Monocot leaves typically exhibit a parallel venation pattern, whereas dicot leaves display a reticulate venation pattern. |
| 2. | Monocot leaves are generally smaller in size and thickness than dicot leaves. |
| 3. | Dicot leaves usually have sheathing leaf bases, unlike monocot leaves. |
| 4. | Monocot leaves possess multiple main veins that originate from the same point at the base. |
Subtopic: Dicot Leaf | Monocot Leaf |
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Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following :
1. Tyloses in vessels
2. Closure of stomata
3. Flaccidity of bulliform cells
4. Shrinkage of air spaces in spongy mesophyll
Subtopic: Monocot Leaf |
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NEET - 2019
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