Hormone discovered through tissue culture technique is

Options

A. Auxin
B. Cytokinin
C. Gibberellin
D. Abscisic acid.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the hormone that was discovered using tissue culture techniques.

2. **Identifying the Options**: The options provided are:
- A) Auxin
- B) Cytokinin
- C) Gibberellin
- D) Abscisic Acid

3. **Analyzing Each Option**:
- **Auxin**: While auxins are important plant hormones, they were not specifically discovered through tissue culture.
- **Cytokinin**: This hormone was indeed discovered through tissue culture techniques.
- **Gibberellin**: Gibberellins are also important but were not discovered through tissue culture.
- **Abscisic Acid**: This hormone is known for its role in plant stress responses but was not discovered through tissue culture.

4. **Identifying the Correct Answer**: Based on the analysis, the correct answer is **Cytokinin** (Option B).

5. **Historical Context**: Cytokinins were discovered by researchers Skoog and Miller, who identified them through their work with tissue cultures.

6. **Additional Information**: The first cytokinin discovered was kinetin, which was derived from the degradation products of DNA.

7. **Final Answer**: The hormone discovered through tissue culture technique is **Cytokinin**.

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