Filtration occurs in

Options

A. Glomerulus
B. Bowman's capsule
C. Malpighian body
D. Ureter

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where filtration occurs in the excretory system. We need to identify the correct part among the given options.

2. **Analyzing the Options**:
- **Option 1: Glomerulus**: The glomerulus is a network of capillaries located in the Bowman's capsule. It is responsible for the process of ultrafiltration, where blood is filtered under high pressure.
- **Option 2: Bowman's Capsule**: While the Bowman's capsule is involved in the filtration process, the actual filtration occurs in the glomerulus. The Bowman's capsule collects the filtrate.
- **Option 3: Malpighian Body**: This term refers to the combination of the glomerulus and Bowman's capsule. It does not specifically indicate where filtration occurs.
- **Option 4: Ureter**: The ureter is a duct that carries urine from the kidneys to the bladder and does not participate in filtration.

3. **Identifying the Correct Answer**: Based on the analysis, the glomerulus is the main site where filtration occurs in the nephron. The process is known as ultrafiltration.

4. **Conclusion**: The correct answer to the question "Filtration occurs in" is the **glomerulus**.

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