Exponential growth in human population is represented in

Options

A. Lag phase
B. Log phase
C. Plateau stage
D. First stage

Answer

To determine the correct representation of exponential growth in the human population, we need to analyze the phases of population growth.

### Step-by-Step Solution:

1. **Understanding Population Growth Phases**:
- Population growth can be divided into different phases: lag phase, log (or exponential) phase, plateau (or stationary) phase.

2. **Lag Phase**:
- This is the initial phase where the population starts to grow. The growth rate is slow as the population is just beginning to establish itself. This phase is not characterized by exponential growth.

3. **Log Phase (Exponential Phase)**:
- In this phase, the population experiences rapid growth due to abundant resources. The birth rate is high, and the death rate is low, leading to exponential growth. This is the phase where the population grows exponentially.

4. **Plateau Phase (Stationary Phase)**:
- In this phase, the growth rate stabilizes as the birth rate equals the death rate. There is no further increase in population size, meaning exponential growth has ceased.

5. **Conclusion**:
- The question asks for the phase that represents exponential growth in the human population. Based on the analysis, the correct answer is the **log phase** (also known as the exponential phase), as this is where the population grows exponentially.

### Final Answer:
- **Exponential growth in human population is represented in the log phase.**