The effect of IAA on the synthesis of ethylene is that it

Options

A. is reduced
B. is induced
C. in unaffected
D. depends upon the presence of other hormones

Answer

To answer the question regarding the effect of Indole-3-Acetic Acid (IAA) on the synthesis of ethylene, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Role of IAA**:
- IAA is a plant hormone known as auxin, which plays a significant role in various plant growth and developmental processes.

2. **Identify the Relationship Between IAA and Ethylene**:
- Ethylene is another important plant hormone that is involved in processes such as fruit ripening, flower wilting, and leaf fall.

3. **Analyze the Options Provided**:
- The options given are:
- A) Reduced
- B) Induced
- C) Unaffected
- D) Depends on the presence of other hormones

4. **Refer to Scientific Knowledge**:
- Research indicates that IAA can stimulate the production of ethylene. Specifically, the combination of IAA with other factors such as CO2 and Ag+ has been shown to significantly increase ethylene production.

5. **Conclusion**:
- Based on the evidence, the synthesis of ethylene is induced by IAA. Therefore, the correct answer is **B) Induced**.

### Final Answer:
The effect of IAA on the synthesis of ethylene is that it is **induced** (Option B).

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