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Which one of the following pairs, is not correctly matched? [2007]
- a)Gibberellic acid - Leaf fall
- b)Cytokinin - Cell wall elongation
- c)IAA - Cell wall elongation
- d)Abscissic acid - Stomatal closure.
Correct answer is option 'A'. Can you explain this answer?
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Which one of the following pairs, is not correctly matched? [2007]a)Gi...
Gibberllic acid stimulates cell growth of leaves and stem causing their expansion, elongation respectively and leaf fall is controlled by ABA.
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Which one of the following pairs, is not correctly matched? [2007]a)Gi...
Understanding Plant Hormones
Plant hormones, also known as phytohormones, play crucial roles in regulating growth, development, and various physiological processes in plants. Each hormone has specific functions and effects on plant tissues.
Incorrect Match: Gibberellic Acid
- Gibberellic Acid (GA) is primarily involved in promoting growth and development processes such as:
- Stem elongation
- Seed germination
- Flowering
- Leaf Fall is primarily regulated by Abscisic Acid (ABA) and not by Gibberellic Acid. GA promotes growth, while ABA is responsible for processes that lead to leaf senescence and abscission.
Correct Matches for Other Hormones
- Cytokinin:
- Functions in promoting cell division and shoot formation.
- Helps delay leaf senescence.
- IAA (Indole-3-Acetic Acid):
- A major plant hormone that regulates cell elongation and differentiation.
- Promotes phototropism and gravitropism.
- Abscisic Acid (ABA):
- Primarily involved in stress responses.
- Controls stomatal closure to reduce water loss during drought conditions.
Conclusion
The incorrect pairing of Gibberellic Acid with leaf fall highlights the importance of understanding the specific roles of plant hormones. While Gibberellic Acid promotes growth, it is Abscisic Acid that plays a key role in processes leading to leaf fall. Recognizing these distinctions is essential for grasping plant physiology, especially in contexts like NEET where plant biology is a significant topic.
Plant hormones, also known as phytohormones, play crucial roles in regulating growth, development, and various physiological processes in plants. Each hormone has specific functions and effects on plant tissues.
Incorrect Match: Gibberellic Acid
- Gibberellic Acid (GA) is primarily involved in promoting growth and development processes such as:
- Stem elongation
- Seed germination
- Flowering
- Leaf Fall is primarily regulated by Abscisic Acid (ABA) and not by Gibberellic Acid. GA promotes growth, while ABA is responsible for processes that lead to leaf senescence and abscission.
Correct Matches for Other Hormones
- Cytokinin:
- Functions in promoting cell division and shoot formation.
- Helps delay leaf senescence.
- IAA (Indole-3-Acetic Acid):
- A major plant hormone that regulates cell elongation and differentiation.
- Promotes phototropism and gravitropism.
- Abscisic Acid (ABA):
- Primarily involved in stress responses.
- Controls stomatal closure to reduce water loss during drought conditions.
Conclusion
The incorrect pairing of Gibberellic Acid with leaf fall highlights the importance of understanding the specific roles of plant hormones. While Gibberellic Acid promotes growth, it is Abscisic Acid that plays a key role in processes leading to leaf fall. Recognizing these distinctions is essential for grasping plant physiology, especially in contexts like NEET where plant biology is a significant topic.
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Which one of the following pairs, is not correctly matched? [2007]a)Gibberellic acid - Leaf fallb)Cytokinin - Cell wall elongationc)IAA - Cell wall elongationd)Abscissic acid - Stomatal closure.Correct answer is option 'A'. Can you explain this answer?
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