Lymph differs from blood in the absence of:

Options

A. RBC
B. WBC
C. proteins
D. plasma

Explanation

To answer the question "Lymph differs from blood in the absence of:", we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Composition of Blood and Lymph**:
- Blood is composed of red blood cells (RBCs), white blood cells (WBCs), platelets, and plasma.
- Lymph is primarily composed of lymphatic fluid, which includes plasma and white blood cells, particularly lymphocytes (B and T cells).

2. **Identify the Key Differences**:
- While both blood and lymph contain plasma and white blood cells, the key difference lies in the presence of red blood cells.
- Blood contains red blood cells, which are responsible for transporting oxygen throughout the body.

3. **Analyze the Options**:
- Option 1: RBCs - This is a potential answer since lymph does not contain red blood cells.
- Option 2: WBCs - This is incorrect because both lymph and blood contain white blood cells.
- Option 3: Proteins - This is also incorrect as proteins are present in both lymph and blood.
- Option 4: Plasma - This is incorrect since plasma is present in both lymph and blood.

4. **Conclude the Answer**:
- Based on the analysis, the correct answer is that lymph differs from blood in the absence of **RBCs** (red blood cells).

### Final Answer:
Lymph differs from blood in the absence of **RBCs (red blood cells)**.

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