Question

numeric 1 point a herbivore ingests 6 kcal of energy. it gains 1 kcal in biomass, uses 2 kcal in respiration, and egests 2 kcal as waste. what percent of the ingested energy is available to the next trophic level? round your answer to the closest 0.1%.

Explanation:

Step1: Calculate available energy

The energy available to the next trophic level is the energy that is not egested, used in respiration, or stored as biomass. The total ingested energy is 6 kcal. The egested energy is 2 kcal, the energy used in respiration is 2 kcal and the energy gained as biomass is 1 kcal. So the energy available to the next trophic level is $6-(2 + 2+1)=1$ kcal.

Step2: Calculate percentage

The percentage of ingested energy available to the next trophic level is calculated by $\frac{\text{Available energy}}{\text{Ingested energy}}\times100\%$. Substitute the values: $\frac{1}{6}\times 100\%\approx16.7\%$.

Answer:

16.7%