A porcupine eats 3,000 J of plant material. Of this, 2,100 J is indigestible and is eliminated as feces, 800 J are used in cellular respiration, and 100 J are used for growth and reproduction. What is the approximate production efficiency of this animal?A) 3%B) 11%C) .03%D) 27%E) 33%

A) 3%

Explanation:

Given;

total energy consumed by the porcupine, = 3,000 J

energy eliminated as feces = indigestible plant energy, = 2,100 J

internal energy for cellular respiration = 800 J

energy used by the animal for growth and reproduction = production energy of the animal =  100J

The approximate production efficiency of this animal is calculated as;

Therefore, the approximate production efficiency of this animal is 3 %

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