Where do certain symboitic microorganisms normally occur in human body

Options

A. Vermiform appendix and rectumÂ
B.  CaecumÂ
C.  Duodenum
D. Oral lining and tongue surface.Â

Answer

### Step-by-Step Solution

1. **Understanding Symbiotic Microorganisms**:
- Symbiotic microorganisms are organisms that live in close association with another organism, often providing benefits to each other. In the human body, these microorganisms play a crucial role in digestion and nutrient absorption.

2. **Identifying the Location**:
- In humans, these symbiotic microorganisms are primarily found in the gastrointestinal tract. They help in the breakdown of complex carbohydrates and the synthesis of certain vitamins.

3. **Specific Location**:
- The specific area where these microorganisms are predominantly located is the cecum. The cecum is a small blind sac at the beginning of the large intestine (colon).

4. **Function of the Cecum**:
- The cecum serves as a site for fermentation and digestion of plant materials, where these microorganisms assist in breaking down fibers that human enzymes cannot digest.

5. **Conclusion**:
- Therefore, the correct answer to the question is that certain symbiotic microorganisms normally occur in the cecum of the human body.