Nutrient medium is solidified by adding

Options

A. NAA
B. Sodium hypochlorite
C. Agar
D. Explant

Answer

To answer the question "Nutrient medium is solidified by adding," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Purpose of Nutrient Medium**: Nutrient media are used in laboratories for growing microorganisms, plant tissues, or cells. The medium provides the necessary nutrients for growth.

2. **Identify the Components of Nutrient Medium**: Nutrient media can contain various components, but to solidify the medium, a specific substance is required.

3. **Evaluate the Options**:
- **NaA (Naphthalene Acetic Acid)**: This is a plant hormone used for promoting growth but does not solidify the medium.
- **Sodium Hypochlorite**: Commonly used for sterilization, not for solidifying the medium.
- **Agar**: A gelatinous substance derived from seaweed, widely used to solidify nutrient media.
- **X-Plant**: Refers to plant tissue used in culture, not a solidifying agent.

4. **Select the Correct Answer**: Based on the evaluation, the correct answer is **Agar**, as it is specifically used to solidify nutrient media.

### Final Answer:
Nutrient medium is solidified by adding **Agar**.

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