In tissue culture medium, the soruce of phytohormones is

Options

A. Ager agar
B. Micronutrients
C. Glucose
D. Coconut milk.

Answer

**Step-by-Step Solution:**

1. **Understanding Phytohormones**: Phytohormones, also known as plant hormones, are essential for the growth and differentiation of plant cells and tissues. Common types include auxins, cytokinins, gibberellins, ethylene, and abscisic acid.

2. **Role of Phytohormones in Tissue Culture**: In tissue culture, phytohormones play a crucial role in regulating metabolic activities such as cell differentiation and elongation. They act as growth regulators that facilitate the development of cultured cells.

3. **Identifying Sources of Phytohormones**: The question asks for the source of phytohormones in tissue culture media. The options provided are:
- Agar agar
- Micronutrients
- Glucose
- Coconut milk

4. **Evaluating Each Option**:
- **Agar agar**: This is a gelling agent used in culture media but does not provide phytohormones.
- **Micronutrients**: These are essential nutrients required in small quantities but are not sources of phytohormones.
- **Glucose**: While glucose serves as an energy source for plant cells, it does not provide phytohormones.
- **Coconut milk**: This is known to be a rich source of phytohormones and is commonly used in tissue culture media to supply growth regulators.

5. **Conclusion**: Based on the evaluation, the correct answer is **coconut milk**, as it serves as a good source of phytohormones in tissue culture media.

**Final Answer**: Coconut milk is the source of phytohormones in tissue culture medium.

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