Who isolated auxins from tips of coleoptiles of oat seedings?

Options

A. Darwin and Darwin
B. Went
C. Skoog et al.
D. Kurosawa

Explanation

To answer the question "Who isolated auxins from tips of coleoptiles of oat seedlings?" we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the scientist who isolated auxins specifically from the tips of coleoptiles of oat seedlings. Auxins are a class of plant hormones that play a crucial role in plant growth and development.

2. **Identify Key Scientists**: The video transcript mentions several scientists, including:
- Charles Darwin and Francis Darwin
- F.W. Wendt
- Skoug et al.
- Kurosawa

3. **Analyze Each Scientist's Contribution**:
- **Darwin and Darwin**: They conducted experiments on canary grass and proposed the idea of a substance influencing plant growth, but they did not isolate auxins.
- **F.W. Wendt**: He worked specifically on oat seedlings (Avena sativa) and is credited with the discovery of auxins from the coleoptiles of these seedlings.
- **Skoug et al.**: They are known for their work on cytokinin, not auxins.
- **Kurosawa**: He is associated with gibberellins, another type of plant hormone.

4. **Conclude the Answer**: Based on the analysis, the correct answer to the question is F.W. Wendt, as he isolated auxins from the tips of the coleoptiles of oat seedlings.

### Final Answer:
**F.W. Wendt** is the scientist who isolated auxins from the tips of coleoptiles of oat seedlings.

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