Read the following statements (A - D).
A - Solidification of faeces in the rectum, reduces the urge for defaecation.
B - Vomiting is a reflex action
C - Electrolytes like Cl - are absorbed in the gut by simple diffusion
D - Micelles are formed in gut lumen
How many of the above statements are correct?

Options

A. None
B. One
C. Two
D. Three

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: Solidification of faeces in the rectum reduces the urge for defaecation.**
- This statement is **correct**. When faeces solidify in the rectum, it can lead to a decreased urge to defecate because the body may interpret the presence of solid waste as a signal that it does not need to eliminate more waste.

**Hint:** Think about how the body regulates the urge to defecate based on the state of the waste material in the rectum.

2. **Statement B: Vomiting is a reflex action.**
- This statement is also **correct**. Vomiting is indeed a reflex action controlled by the vomiting center in the brain, which responds to various stimuli such as irritation of the stomach or signals from the inner ear.

**Hint:** Consider how the body responds automatically to certain triggers, like nausea or motion sickness.

3. **Statement C: Electrolytes like Cl- are absorbed in the gut by simple diffusion.**
- This statement is **correct**. Electrolytes, including chloride ions (Cl-), can be absorbed in the gut through simple diffusion, especially in small amounts.

**Hint:** Reflect on the mechanisms of absorption in the intestines and how substances can pass through cell membranes.

4. **Statement D: Micelles are formed in the gut lumen.**
- This statement is **incorrect**. Micelles are not formed in the gut lumen; they are formed in the liver and secreted by the gallbladder. Micelles aid in the absorption of fat-soluble vitamins and fatty acids.

**Hint:** Think about where bile is produced and how it interacts with fats during digestion.

### Conclusion:
- Statements A, B, and C are correct, while statement D is incorrect. Therefore, **3 out of the 4 statements are correct**.

### Final Answer:
**3 statements are correct.**