Choose the incorret statement

Options

A. A living organism can be sure that there is another individual of its kind ot take its place when it dies.
B. Reproduction is one of the most characteristic feature of living organisms
C. All individuals are mortal including all single celled organism
D. Life expectancy is based on average life span

Answer

To solve the question of identifying the incorrect statement among the given options, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze Statement 1**:
- Statement: "A living organism can be sure that there is another individual of its kind to take its place."
- Explanation: This statement is true because reproduction ensures that there are offspring to continue the species. In a population, individuals reproduce, leading to the emergence of new individuals of the same species.

2. **Analyze Statement 2**:
- Statement: "Reproduction is one of the most characteristic features of living organisms."
- Explanation: This statement is also true. Reproduction is indeed a fundamental characteristic of living organisms, as it is essential for the continuation of a species.

3. **Analyze Statement 3**:
- Statement: "All individuals are mortal including all single-celled organisms."
- Explanation: This statement is incorrect. While most organisms are mortal, certain single-celled organisms, like amoeba, can reproduce asexually through fission, creating identical clones. In this context, the original organism can be considered "immortal" because its genetic material continues through its offspring.

4. **Analyze Statement 4**:
- Statement: "Life expectancy is based on the average lifespan."
- Explanation: This statement is true. Life expectancy is indeed calculated based on the average lifespan of a population, which provides a statistical measure of how long individuals are expected to live.

### Conclusion:
The incorrect statement is **Statement 3**: "All individuals are mortal including all single-celled organisms."