Question

If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to the tertiary consumer?​ ​

• A. 10 J
• B. 0.15 J
• C. 1.5 J
• D. 15 J

Answer 1

The correct option is B 0.15 J

• A typical food chain is -​

Producers → primary consumers → secondary consumers → tertiary consumers​

• According to the ten percent law, only 10% of the energy is available to the organism in the succeeding trophic level.​

• Being the last trophic level, the tertiary consumers will receive 0.15 J energy if 150 J energy is available to the producers as the amount of energy will reduce by 10% in each trophic level.