Excretion in Amoeba occurs through

Options

A. lobopodia
B. uroid portion
C. plasma membrane
D. contractile vacuole

Explanation

**Step-by-Step Solution:**

1. **Understanding the Structure of Amoeba**:
- Amoeba is a unicellular organism that has a flexible shape and moves using extensions called pseudopodia. These extensions are formed by the cytoplasm and are crucial for locomotion.

2. **Identifying the Options**:
- The question provides several options regarding the mechanism of excretion in Amoeba: lobopodia, uroid portion, plasma membrane, and contractile vacuole.

3. **Evaluating Lobopodia**:
- Lobopodia are a type of pseudopodia that help in movement. They are not involved in excretion. Therefore, this option is incorrect.

4. **Evaluating Uroid Portion**:
- The uroid portion is a part of the amoeba that may assist in movement but is not directly involved in excretion. Thus, this option is also incorrect.

5. **Evaluating Plasma Membrane**:
- The plasma membrane serves as the outer boundary of the cell. While it plays a role in the overall functioning of the cell, it is not specifically responsible for excretion. This option is incorrect as well.

6. **Identifying the Correct Answer - Contractile Vacuole**:
- The contractile vacuole is the organelle responsible for excretion in Amoeba. It collects waste materials and, through a process of fusion with the plasma membrane, expels these wastes from the cell. This makes the contractile vacuole the correct answer.

7. **Conclusion**:
- Therefore, the correct answer to the question "Excretion in Amoeba occurs through" is the **contractile vacuole**.

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