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Select the correct pair out of the follwing.
- a)Hypostomatic leaf - Dicots
- b)Epistomatic leaf - Monocots
- c)Amphistomatic leaf - Free-floating hydrophytes
- d)Presence of sunken stomata in leaf - Submerged hydrophytes
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Select the correct pair out of the follwing.a)Hypostomatic leaf - Dico...
In dicot leaves, stomata are generally present on lower epiderm is (hypostomatic), whereas in monocot leaves, they are present on both the surfaces (amphistomatic). In free -floating hydrophytes, stomata are restricted to upper epidermis (epistomatic) whereas in submerged hydrophytes, stomata are either non-functional or ab sent. In algae and fungi, stomata are totally absent. Stomata are sunken (deepseated) in case of xerophytes.
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Select the correct pair out of the follwing.a)Hypostomatic leaf - Dico...
Understanding Leaf Types and Stomatal Placement
The correct answer is indeed option 'A': Hypostomatic leaf - Dicots. Here’s a detailed explanation of this classification.
1. Hypostomatic Leaves
- Hypostomatic leaves are characterized by having stomata located primarily on the lower surface (abaxial side) of the leaf.
- This adaptation helps reduce water loss through transpiration, which is particularly beneficial for plants in environments where water conservation is critical.
2. Dicots and Their Leaf Structure
- Dicots (or dicotyledons) are one of the two major groups of angiosperms, known for having two embryonic leaves or cotyledons.
- Many dicots exhibit hypostomatic leaves, including common plants like beans and sunflowers.
- The stomatal placement in these leaves aids in optimizing gas exchange while minimizing excess water loss.
3. Other Leaf Types Explained
- Epistomatic leaves (Option B): Stomata are primarily located on the upper surface. This is more common in some monocots but does not apply universally.
- Amphistomatic leaves (Option C): Stomata are present on both surfaces. This adaptation is often found in free-floating hydrophytes, but not exclusively.
- Sunken Stomata (Option D): Sunken stomata are adaptations found in submerged hydrophytes to reduce water loss; however, these do not represent the typical stomatal arrangement in dicots.
Conclusion
The classification of hypostomatic leaves in dicots highlights the ecological adaptations of these plants to their environments. Understanding these leaf types is crucial for comprehending plant physiology and their survival strategies.
The correct answer is indeed option 'A': Hypostomatic leaf - Dicots. Here’s a detailed explanation of this classification.
1. Hypostomatic Leaves
- Hypostomatic leaves are characterized by having stomata located primarily on the lower surface (abaxial side) of the leaf.
- This adaptation helps reduce water loss through transpiration, which is particularly beneficial for plants in environments where water conservation is critical.
2. Dicots and Their Leaf Structure
- Dicots (or dicotyledons) are one of the two major groups of angiosperms, known for having two embryonic leaves or cotyledons.
- Many dicots exhibit hypostomatic leaves, including common plants like beans and sunflowers.
- The stomatal placement in these leaves aids in optimizing gas exchange while minimizing excess water loss.
3. Other Leaf Types Explained
- Epistomatic leaves (Option B): Stomata are primarily located on the upper surface. This is more common in some monocots but does not apply universally.
- Amphistomatic leaves (Option C): Stomata are present on both surfaces. This adaptation is often found in free-floating hydrophytes, but not exclusively.
- Sunken Stomata (Option D): Sunken stomata are adaptations found in submerged hydrophytes to reduce water loss; however, these do not represent the typical stomatal arrangement in dicots.
Conclusion
The classification of hypostomatic leaves in dicots highlights the ecological adaptations of these plants to their environments. Understanding these leaf types is crucial for comprehending plant physiology and their survival strategies.
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Select the correct pair out of the follwing.a)Hypostomatic leaf - Dicotsb)Epistomatic leaf - Monocotsc)Amphistomatic leaf - Free-floating hydrophytesd)Presence of sunken stomata in leaf - Submerged hydrophytesCorrect answer is option 'A'. Can you explain this answer?
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