Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Which of the following is not an example of using relative density to measure population density in a certain area?
A
Counting pugmarks of tigers to find population density of tigers in a forest and
B
Counting the number of fishes caught in a trap to find population density of fishes in a lake
C
Measuring biomass of phytoplanktons in 
water to find out population density of phytoplanktons in a lake.
water to find out population density of phytoplanktons in a lake.
D
Both
Text Solution
Verified by ExpertsThe correct answer is:
C
Relative density uses indirect measures like pugmarks or trap counts.
Measuring actual biomass of phytoplankton is a direct estimation, not relative density.
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