Regeneration is observed in ________

Options

A. Amoeba
B. Paramoecium
C. Spirogyra
D. Yeast

Answer

**Step-by-Step Solution:**

1. **Understanding Regeneration**: Regeneration is defined as the process of renewal, restoration, and tissue growth after any disturbance or damage. This process allows organisms to repair or replace lost or damaged parts.

2. **Analyzing the Options**: The options provided are amoeba, paramecium, spirogyra, and yeast. We need to determine which of these organisms is capable of regeneration.

3. **Evaluating Amoeba and Paramecium**: Both amoeba and paramecium are single-celled organisms. They are considered primitive and do not exhibit advanced regeneration processes. Therefore, we can eliminate these two options.

4. **Evaluating Spirogyra**: Spirogyra is a filamentous green algae that can reproduce both sexually and asexually. During asexual reproduction, it can undergo fragmentation, which allows it to regenerate. From any part of the organism, new plants can be formed, indicating that spirogyra has the capability for regeneration.

5. **Evaluating Yeast**: Yeast is also a single-celled organism and while it has some unique features, it does not exhibit regeneration in the same way that spirogyra does. Therefore, yeast can also be eliminated as an option.

6. **Conclusion**: After evaluating all options, the correct answer is spirogyra, as it is the only organism among the options that demonstrates the ability to regenerate.

**Final Answer**: Regeneration is observed in **spirogyra**.

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