Question

Given is the pyramid of energy along with its biomass of grassland ecosystem.
The ecological efficiency of $T_3$ in the given representation is?

• A. $8.3\%$
• B. $9.43\%$
• C. $10\%$
• D. $10.59\%$

Answer 1

The correct option is D $10.59\%$

Third trophic level (T${}_3$) is represented by secondary consumer with 250.55 J energy. Out of this energy, only 26.55 J of energy is transferred to next trophic level, hence efficiency is 26.55/250.55 × 100 = 10.59.