The point in S-shaped growth curve where growth is maximum is
called

Options

A. Inflexion point
B. Compensation point
C. Extinction point
D. Deflection point

Answer

To answer the question regarding the point in the S-shaped growth curve where growth is maximum, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the S-shaped Growth Curve**: The S-shaped growth curve, also known as the sigmoid growth curve, typically consists of three phases: lag phase, log (exponential) phase, and stationary phase.

2. **Identify the Phases**:
- **Lag Phase**: This is the initial phase where the growth is slow as the organisms are acclimatizing to their environment.
- **Log Phase**: This is the phase where the growth rate increases rapidly, and the population grows exponentially.
- **Stationary Phase**: This is the phase where the growth rate slows down and stabilizes as resources become limited.

3. **Locate the Maximum Growth Point**: The maximum growth occurs during the log phase, which is characterized by the steepest slope in the growth curve. The point at which this maximum growth rate occurs is known as the **extinction point**.

4. **Evaluate Other Options**:
- **Inflection Point**: This is where the curve changes its curvature but does not represent the maximum growth.
- **Compensation Point**: This is where photosynthesis and respiration rates are equal, not related to maximum growth.
- **Deflection Point**: This term is not typically used in the context of growth curves.

5. **Conclusion**: The point in the S-shaped growth curve where growth is maximum is called the **extinction point**.

### Final Answer:
The point in the S-shaped growth curve where growth is maximum is called the **extinction point**.

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