Question

Flow of energy declines as it passes from lower to higher trophic level. This is explained by

• A. First law of thermodynamics
• B. Second law of thermodynamics
• C. Newtons second law
• D. Newtons third law

Answer 1

The correct option is B Second law of thermodynamics

Flow of energy declines as it passes from lower to higher trophic level. This is explained by second law of thermodynamics. According to this law, the energy decreases from one trophic level to the next trophic level because energy is lost as metabolic heat during transfer of energy. When food energy passes from producers to herbivores to carnivores, only 10% of energy is transferred from one trophic level to another trophic level.

Thus, the correct answer is 'Second law of thermodynamics.'