If a population of 50 Paramoecium present in a pool increases to 150 after an hour, what would be the per cent growth or birth rate per individual per hour?

Options

A. 100
B. 200
C. 50
D. 150

Answer

To find the percentage growth or birth rate per individual per hour for the population of Paramecium, we can follow these steps:

### Step 1: Identify the initial and final populations
- Initial population (P0) = 50 Paramecium
- Final population (P1) = 150 Paramecium

### Step 2: Calculate the total increase in population
- Total increase = Final population - Initial population
- Total increase = 150 - 50 = 100 Paramecium

### Step 3: Calculate the birth rate
- Birth rate = (Total increase / Initial population) × 100%
- Birth rate = (100 / 50) × 100%

### Step 4: Perform the calculation
- Birth rate = 2 × 100% = 200%

### Final Answer
The percentage growth or birth rate per individual per hour is **200%**.

---