Select the incorrect statement

Options

A. Life span are not necessarily correlated with size or complexity of organisms.
B. Some multicellular organisms are immortal.
C. Life span is specific trait of each organism
D. Life span of mango tree is much shorter than that of peepal tree

Answer

To solve the question of identifying the incorrect statement regarding lifespans of organisms, we will analyze each statement provided in the options.

### Step-by-Step Solution:

1. **Understanding Lifespan**:
- Lifespan is defined as the period from the birth of an organism to its natural death. This is a crucial concept as it sets the context for evaluating the statements.

2. **Evaluating Statement 1**:
- The first statement claims that lifespans are not necessarily correlated with the size or complexity of organisms.
- **Analysis**: This statement is true. For instance, a mango tree (which is large) has a lifespan of about 15-20 years, while a peepal tree (also large) can live for 900-1500 years. Additionally, humans (complex organisms) typically live around 90 years, while some smaller organisms like parrots can live up to 140 years.

3. **Evaluating Statement 2**:
- The second statement claims that some multicellular organisms are immortal.
- **Analysis**: This statement is false. No multicellular organisms are known to be immortal; immortality is generally associated with certain unicellular organisms, like amoeba. Therefore, this is the incorrect statement.

4. **Evaluating Statement 3**:
- The third statement asserts that lifespan is a specific trait of each organism.
- **Analysis**: This statement is true. Each species has a defined lifespan, for example, humans have an average lifespan of 60-80 years, while different species have varying lifespans.

5. **Evaluating Statement 4**:
- The fourth statement states that the lifespan of a mango tree is much shorter than that of a peepal tree.
- **Analysis**: This statement is also true, as previously discussed, with mango trees living for about 15-20 years and peepal trees living for 900-1500 years.

6. **Conclusion**:
- After evaluating all statements, the incorrect statement is identified as the second one, which claims that some multicellular organisms are immortal.

### Final Answer:
The incorrect statement is **B**: "Some multicellular organisms are immortal."