Question

If the heterotrophs in level 2 of a trophic pyramid produce 20,000 kilograms of biomass, how much energy did the autotrophs produce?

A
20 kg

B
200 kg

C
2,000 kg

D
200,000 kg

Answer 1

The answer is D !! It is 10% rule ; thus autotroph will produce 200,000 kg in order that heterotroph will gain 20,000 kg !!

Thus D is the correct one !!