AIIMS2001Botany-Ecology
AIIMS 2001 Botany Population Estimation MCQ Question
Type: MCQ-numerical-Medium-Class 12
Some students, during a study, caught, marked and released 80 fishes in a pond. Later 100 fishes were caught at random. Among these 40 were found to be marked. What is the approximate number of fishes in the pond?
A
50
B
100
C
200
D
4000
Correct Answer
Option C
Detailed Explanation
Using the mark-recapture method, the population size can be estimated as (number marked initially × total caught second time) / number marked second time = (80 × 100) / 40 = 200.
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