Read the following (A-D) Statements `:-`
A. Plasma is a straw colouered, viscous fluid constituting 55 percent of the blood.
B. 90-92 percent of plasma is water and proteins contribute 6-8 percent of it.
C. Globulins are needed for clotting or coagulation of Blood.
D. Fibrinogens are primarly involved in defence mechanism of the body
How many of the above statements are correct.

Options

A. Four
B. Three
C. Two
D. One

Answer

To determine how many of the statements (A-D) are correct, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A**: "Plasma is a straw colored, viscous fluid constituting 55 percent of the blood."
- This statement is **correct**. Plasma is indeed a straw-colored, viscous fluid and constitutes approximately 55% of the total blood volume.

2. **Statement B**: "90-92 percent of plasma is water and proteins contribute 6-8 percent of it."
- This statement is also **correct**. Plasma is primarily composed of about 90-92% water, with proteins making up about 6-8% of its composition.

3. **Statement C**: "Globulins are needed for clotting or coagulation of Blood."
- This statement is **incorrect**. Globulins are primarily involved in the immune response and defense mechanisms, not in blood clotting. The proteins responsible for clotting are primarily fibrinogens.

4. **Statement D**: "Fibrinogens are primarily involved in the defense mechanism of the body."
- This statement is **incorrect**. Fibrinogen is a protein that plays a crucial role in blood clotting, not in the defense mechanisms of the body.

### Conclusion:
- **Correct Statements**: A and B (2 statements)
- **Incorrect Statements**: C and D (2 statements)

Thus, **the number of correct statements is 2**.