2020 Phase-2 EcosystemEcological pyramids - energy, biomass, numbers Medium Question 30 of 85 in Ecosystem

Which of the following statements is incorrect?

A Energy content gradually decreases from first to fourth trophic level
B Biomass decreases from first to fourth trophic level
C Energy content gradually increases from first to fourth trophic level
D Number of individuals decreases from first trophic level to fourth trophic level

The answer is C.

Solution

Energy content actually decreases (not increases) progressively from lower to higher trophic levels, following the 10 percent law of energy transfer — so the statement that energy content increases from first to fourth trophic level is incorrect.

Concept Ecological pyramids - energy, biomass, numbers

Ecosystem in past papers

85 questions from this chapter have appeared across 26 exam years.