Liquid which remain after clotting of blood is called as `:-`

Options

A. Serum
B. Plasma
C. Lymph
D. Blood

Answer

To answer the question "Liquid which remains after clotting of blood is called as:", we will follow these steps:

### Step-by-Step Solution:

1. **Understanding Blood Composition**: Blood is a specialized connective tissue that consists of a fluid matrix and formed elements. The fluid matrix is known as plasma, which makes up about 55% of blood.

2. **Identifying Plasma Components**: Plasma is primarily composed of water (90-92%) and proteins (6-8%). The major proteins in plasma include albumin, fibrinogens, and globulins. Importantly, plasma contains clotting factors.

3. **Clotting Process**: When blood clots, the solid components (formed elements) and some proteins are involved in the clotting process. The liquid portion that remains after the clotting has occurred is what we need to identify.

4. **Defining Serum**: The liquid that remains after the blood has clotted is known as serum. Serum is essentially plasma without the clotting factors, as these factors are used up during the clotting process.

5. **Conclusion**: Therefore, the correct answer to the question is that the liquid which remains after clotting of blood is called **serum**.

### Final Answer:
The liquid which remains after clotting of blood is called **serum**.

---