No individual is immortal except-

Options

A. Single celled organisms
B. Green plants
C. Sponges'
D. Drones

Answer

**Step-by-Step Solution:**

1. **Understanding Mortality in Organisms**: All organisms are generally considered mortal, meaning they have a life span and eventually die. However, the question asks for an exception to this rule.

2. **Identifying the Options**: The options provided include single-celled organisms, green plants, sponges, and drones (male honeybees). We need to analyze these options to determine which one is considered "immortal."

3. **Analyzing Single-Celled Organisms**: Single-celled organisms reproduce asexually. This means they can create offspring from a single parent without the mixing of genetic material from two parents. As a result, the offspring are genetically identical to the parent, leading to the idea that they do not experience death in the same way multicellular organisms do.

4. **Examining Other Options**:
- **Green Plants**: They reproduce sexually, which involves the mixing of genetic material. This process leads to variation and ultimately results in a life span and death.
- **Sponges**: These are multicellular organisms that also reproduce sexually, leading to mortality.
- **Drones (Honeybee Males)**: Drones are produced through sexual reproduction and have a defined life span, making them mortal as well.

5. **Conclusion**: Based on the analysis, the only option that does not exhibit mortality in the traditional sense is the single-celled organism. Therefore, the answer to the question is that no individual is immortal except for single-celled organisms.

**Final Answer**: Single-celled organisms.

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