From which plant, zeatin was isolated ?

Options

A. (a) Coconut milk
B. (b) Pineapple
C. (c) Soyabean
D. (d) Groundnut

Answer

**Step-by-Step Solution:**

1. **Identify the Compound**: The question asks about zeatin, which is a type of cytokinin, a plant hormone involved in various growth processes.

2. **Historical Context**: Zeatin was first discovered by scientists in the early 1960s. Understanding the historical context helps us recognize the significance of the discovery.

3. **Source of Isolation**: The transcript mentions that zeatin was isolated from coconut milk by Miller in 1961. This is a crucial piece of information as it directly answers the question.

4. **Additional Sources**: The transcript also notes that zeatin was later discovered from immature corn kernels by another scientist, Lee Thumb. This reinforces that zeatin can be found in more than one plant source.

5. **Evaluate Options**: The question likely provides multiple-choice answers. Based on the transcript, the correct answer is coconut milk (from the coconut plant) and corn (from the corn plant).

6. **Final Answer**: Since the question specifically asks for a plant, the most direct answer is coconut.

**Final Answer**: Zeatin was isolated from the coconut plant.

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