Who amongst the following is discoverer of auxin ?

Options

A. Skoog
B. Went
C. Thimann
D. Lavrean

Answer

### Step-by-Step Solution:

1. **Understanding Auxin**: Auxin is a type of phytohormone, which means it is a chemical substance that plays a crucial role in plant growth and development.

2. **Identifying the Discoverer**: The question asks for the discoverer of auxin among the given options: Cook, Wendt, Theamine, and Lavin.

3. **Historical Context**: Auxin was discovered by a Dutch botanist in 1928. This historical context helps narrow down the options.

4. **Isolating Auxin**: The discoverer, F. W. Wendt, isolated auxin from the tip of a plant part known as the coleoptile, which is a sheath covering the shoot tip in grasses.

5. **Conclusion**: Based on the information provided, the correct answer to the question is **Wendt** (Option 2).

### Final Answer:
The discoverer of auxin is **Wendt**.

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