Auxin was isolated by

Options

A. F.W. Went from tips of coleoptiles of oat seedings
B. F. Skoog from tips of coleoptiles of oat seedings
C. Francis Darwin from the tip of coleoptiles of Canary grass
D. None of these

Answer

To solve the question "Auxin was isolated by," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Context**: Understand that auxin is a plant hormone involved in growth and development. The question asks about the scientist who first isolated this hormone.

2. **Review the Options**: The options provided are:
- Option 1: FW Went from tips of coleoptiles of oat seedlings.
- Option 2: F-scook from tips of coleoptiles of oat seedlings.
- Option 3: Francis Darwin from the tip of coleoptiles of canary grass.
- Option 4: None of these.

3. **Recall Historical Information**: Auxin was first isolated by F.W. Went in the early 20th century. He conducted experiments using oat seedlings (Avena sativa) and demonstrated the role of auxin in plant growth.

4. **Analyze the Correct Option**: Since F.W. Went is known for isolating auxin from the tips of coleoptiles of oat seedlings, we can conclude that:
- The correct answer is **Option 1: FW Went from tips of coleoptiles of oat seedlings**.

5. **Final Answer**: Therefore, the scientist who isolated auxin is F.W. Went.