Vermiform appaendix in human is

Options

A. Site of RBC formation
B. A lymphoid organ
C. Site for WBC birth
D. Functional in digestion

Answer

### Step-by-Step Solution:

1. **Understanding the Vermiform Appendix**: The vermiform appendix is a small, tube-like structure attached to the large intestine in humans. It is often considered a vestigial organ, meaning it has lost most of its original function through evolution.

2. **Analyzing the Options**: The question provides four options regarding the function of the vermiform appendix:
- A) Site of RBC formation
- B) Lymphoid organ
- C) Site of WBC birth
- D) Functional in digestion

3. **Evaluating Each Option**:
- **Option A (Site of RBC formation)**: This is incorrect. Red blood cells (RBCs) are primarily formed in the bone marrow, not in the appendix.
- **Option B (Lymphoid organ)**: The appendix does contain lymphoid tissue and is involved in immune functions, but this is not its primary role.
- **Option C (Site of WBC birth)**: White blood cells (WBCs) are also produced in the bone marrow, so this option is incorrect as well.
- **Option D (Functional in digestion)**: This option is considered correct because the vermiform appendix is involved in the digestion of cellulose, particularly in herbivorous animals. In humans, it may play a role in the digestive process by housing beneficial bacteria.

4. **Conclusion**: Based on the analysis, the correct answer is that the vermiform appendix is "functional in digestion."

### Final Answer:
The vermiform appendix in humans is functional in digestion.

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