Amoeba is immortal. It occurs all over the world due to

Options

A. Binary fission
B. Conjugation
C. Spores
D. Regeneration.

Answer

**Step-by-Step Solution:**

1. **Understanding the Concept of Immortality in Amoeba:**
- The term "immortal" in the context of amoeba refers to its ability to reproduce indefinitely through a process that allows for continuous generation of new cells.

2. **Identifying the Reproductive Methods of Amoeba:**
- Amoeba primarily reproduces through asexual reproduction methods, with binary fission being the most common. Other methods include conjugation, spore formation, and regeneration.

3. **Analyzing Binary Fission:**
- Binary fission is a process where a single amoeba cell divides into two identical daughter cells. This process can continue indefinitely, allowing the genetic material to persist through successive generations. This is a key reason why amoeba can be considered "immortal."

4. **Evaluating Conjugation:**
- Conjugation involves two amoeba cells coming together to exchange genetic material. While this process contributes to genetic diversity, it does not contribute to the immortality of the organism itself.

5. **Considering Spore Formation:**
- Spore formation is a reproductive strategy that can occur in some organisms, but it is not a primary method of reproduction for amoeba. It does not lead to immortality.

6. **Examining Regeneration:**
- Regeneration refers to the ability of an organism to regrow lost parts. However, this process does not apply to amoeba in the context of immortality.

7. **Conclusion:**
- The correct answer to the question is that amoeba is considered immortal due to the process of binary fission, which allows for continuous reproduction and the perpetuation of its genetic lineage.

**Final Answer:**
Amoeba is immortal due to binary fission.

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