During binary fission in Amoeba which of the following organelles is duplicated ? a) plasma membrane b) nucleus c) contractile vacuole d) all of these

Options

A. Palsma membrane
B. Nucleus
C. Contractile vacuole
D. All of these

Explanation

**Step-by-Step Solution:**

1. **Understanding Binary Fission**: Binary fission is a form of asexual reproduction commonly seen in unicellular organisms like Amoeba. In this process, a single organism divides into two identical daughter cells.

2. **Identifying the Process**: During binary fission, the organism undergoes several steps. The first step involves the duplication of genetic material (DNA), followed by the division of the cytoplasm and other organelles.

3. **Differentiating Between Duplication and Division**: It is crucial to understand the difference between duplication and division. Duplication refers to the creation of an exact copy of an organelle, while division refers to splitting an existing organelle into parts.

4. **Analyzing the Options**:
- **Plasma Membrane**: The plasma membrane is divided during the process of binary fission to form two separate cells.
- **Nucleus**: The nucleus undergoes duplication, meaning that the genetic material is copied to ensure both daughter cells have the same genetic information.
- **Contractile Vacuole**: Similar to the plasma membrane, the contractile vacuole is divided between the two daughter cells.
- **All of These**: This option suggests that all organelles are duplicated, which is not correct since only the nucleus is duplicated.

5. **Conclusion**: Based on the analysis, during binary fission in Amoeba, the only organelle that is duplicated is the nucleus. Therefore, the correct answer is **b) nucleus**.

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