Which of the following statements is not true for J-shaped growth curve?

Options

A. Exponential phase is prolonged
B. Population never grows beyond carrying capacity
C. Population crash occurs
D. Population seldom reaches equilibrium

Answer

To determine which statement is not true for a J-shaped growth curve, we need to analyze each statement in the context of what we know about this type of growth.

### Step-by-Step Solution:

1. **Understanding J-shaped Growth Curve**:
- The J-shaped growth curve represents exponential growth, where a population increases rapidly when resources are unlimited.

2. **Evaluating the Statements**:
- **Statement 1**: "Exponential phase is prolonged."
- This statement is true. In a J-shaped growth curve, the exponential growth phase continues as long as resources are available.

- **Statement 2**: "Population never grows beyond carrying capacity."
- This statement is **not true**. In the J-shaped growth curve, populations can exceed carrying capacity temporarily during the exponential growth phase before a crash occurs.

- **Statement 3**: "Population crash occurs."
- This statement is true. After a period of exponential growth, a population may experience a crash due to resource depletion or other factors.

- **Statement 4**: "Population seldom reaches equilibrium."
- This statement is true. In a J-shaped growth curve, populations do not stabilize at a carrying capacity for long periods; they often fluctuate.

3. **Conclusion**:
- The statement that is not true for the J-shaped growth curve is: "Population never grows beyond carrying capacity."

### Final Answer:
The statement that is not true for the J-shaped growth curve is: **"Population never grows beyond carrying capacity."**

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