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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.     (NEET 2022)
  • a)
    10
  • b)
    1.0
  • c)
    Zero
  • d)
    0.1
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
If 8 Drosophila in a laboratory population of 80 died during a week, t...
If 8 Drosophila in a laboratory population of 80 died during a week, the death rate in the population is  8/80 = 0.1  individuals per Drosophila per week.
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If 8 Drosophila in a laboratory population of 80 died during a week, t...
Understanding Death Rate Calculation
To determine the death rate in a population, we need to calculate how many individuals died per individual in the population over a specific time period.
Step-by-Step Calculation
- Total Population: 80 Drosophila
- Number of Deaths: 8 Drosophila
- Time Frame: 1 week
Formula for Death Rate
The death rate can be calculated using the formula:
- Death Rate = (Number of Deaths / Total Population) per Time Period
Applying the Values
- Death Rate = 8 deaths / 80 Drosophila = 0.1 individuals per Drosophila per week
Interpretation of the Result
- This means that for every Drosophila in the population, the death rate is 0.1 individuals per week.
- In simpler terms, for each individual, the risk of dying in a week is 10% (0.1).
Conclusion
Thus, the correct answer is option 'D', indicating that the death rate is 0.1 individuals per Drosophila per week. This reflects a relatively low mortality rate in the population, which is crucial for understanding population dynamics in ecological studies.
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