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Question

Which of the following is not an example of using relative density to measure population density in a certain area?

A
Counting pug marks of tigers to find population density of tigers a forest
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B
Counting the number of fishes caught in a trap to find population density of fishes in a lake
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C
Measuring biomass of bacterial culture to find out population density of bacteria in a petri dish
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D
Measuring biomass of phytoplanktons in 1 cc water to find out population density of phytoplanktons in a lake
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Solution

The correct option is D Measuring biomass of phytoplanktons in 1 cc water to find out population density of phytoplanktons in a lake
Option D is correct, because measuring of biomass of phytoplanktons is very time consuming and It is a microscopic task to measure only PHYTOPLANKTON in 1 cc water except other species found in the given water.

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