Question

If ‘8’ Drosophila in a laboratory population of ‘80’ died during a week, the death rate in the population is__ individuals per Drosophila per week.

• A. 0.1
• B. 10
• C. 1
• D. Zero

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Death rate (mortality) is the number of deaths per individual per unit time.
Key Formula or Approach:
\[ \text{Death Rate} = \frac{\text{Number of deaths}}{\text{Initial population size}} \]
Step 2: Detailed Explanation:
Number of deaths = 8
Initial population = 80
\[ \text{Death Rate} = \frac{8}{80} = 0.1 \]
The death rate is 0.1 individuals per Drosophila per week.
Step 3: Final Answer:
The death rate is 0.1.