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Abscission layer is formed when the co...

Abscission layer is formed when the concentration of

A

Auxin increases

B

Auxin decreases

C

Gibberellins decreases

D

Gibberellins increases

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Abscission**: Abscission refers to the process by which plants shed various parts, such as leaves, fruits, or flowers. It is a natural part of a plant's life cycle. 2. **Role of Plant Hormones**: Plant hormones play a crucial role in regulating the abscission process. The primary hormone involved in this process is auxin. 3. **Effect of Auxin on Abscission**: Auxin is known to inhibit the abscission of leaves and fruits. When the concentration of auxin is high, the abscission process is suppressed. 4. **Formation of Abscission Layer**: The abscission layer is a weak layer of tissue that forms at the base of the leaf stalk. This layer is crucial for the shedding of leaves or fruits. 5. **Condition for Abscission Layer Formation**: The formation of the abscission layer occurs when the concentration of auxin decreases below a certain threshold. This reduction in auxin levels allows the abscission layer to develop. 6. **Conclusion**: Therefore, the correct answer to the question is that the abscission layer is formed when the concentration of auxin decreases. **Final Answer**: The abscission layer is formed when the concentration of auxin decreases. ---
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