The base present in Cytidine :

Options

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B.
C.
D.

Answer

To determine the base present in Cytidine, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Cytidine**:
- Cytidine is a type of nucleoside, which consists of a nitrogenous base bonded to a sugar molecule (specifically ribose in the case of cytidine).

2. **Identify the Nitrogenous Base**:
- The nitrogenous base associated with cytidine is cytosine. This means that cytidine is formed from the combination of cytosine and ribose sugar.

3. **Structure of Cytosine**:
- Cytosine is one of the four primary bases found in nucleic acids (DNA and RNA). It has a specific chemical structure that includes a pyrimidine ring.

4. **Conclusion**:
- Therefore, the base present in cytidine is cytosine.

### Final Answer:
The base present in Cytidine is **Cytosine**.

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