An anti-ageing plant hormone from the following is

Options

A. IAA
B. `GA_(3)`
C. Zeatin
D. `C_(2)H_(4)`

Answer

To determine the anti-aging plant hormone from the given options, we can follow these steps:

### Step 1: Understand the Options
We have four options to consider:
1. IAA (Indole-3-acetic acid)
2. GA3 (Gibberellic acid)
3. Zeatin
4. C2H4 (Ethylene)

### Step 2: Identify the Functions of Each Hormone
- **IAA (Indole-3-acetic acid)**: This is primarily an auxin, which promotes cell elongation and is involved in various growth processes but is not specifically known for anti-aging properties.

- **GA3 (Gibberellic acid)**: This hormone promotes stem elongation, seed germination, and flowering but does not have a significant role in delaying aging.

- **Zeatin**: This is a type of cytokinin, which is known for its role in promoting cell division and delaying senescence (aging) in plants. It helps in maintaining the vitality of the plant by controlling protein synthesis and resource mobilization.

- **C2H4 (Ethylene)**: This hormone is involved in fruit ripening and senescence, but it does not have anti-aging effects; in fact, it can promote aging and decay.

### Step 3: Conclusion
Based on the functions of these hormones, zeatin is recognized as the anti-aging plant hormone because it delays senescence and promotes growth.

### Final Answer
The anti-aging plant hormone from the options provided is **Zeatin**.

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