Question

Assertion: In a pond ecosystem, pyramid of biomass shows a sharp decrease in the biomass at higher trophic levels.

Reason: Primary producers convert only 10% of the energy of sunlight into net primary productivity.

पर्याय

• Both Assertion and Reason are true and Reason is the correct explanation for Assertion.

• Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.

• Assertion is true and Reason is false.

• Both Assertion and Reason are false.

Answer 1

Both Assertion and Reason are false.

Explanation:

In a pond ecosystem, the pyramid of biomass is usually inverted because phytoplankton (producers) have low biomass but high turnover, so the biomass does not sharply decrease at higher trophic levels. Also, primary producers convert only 1–2% of sunlight into energy, not 10%.