Question

Flow of energy declines from low to higher trophic level in ecosystem, is mainly explained by

• A. First law of thermodynamics
• B. Second law of thermodynamics
• C. Both of the above
• D. None of the above

Answer 1

The correct option is B Second law of thermodynamics

Ecosystem require a constant input of energy as every component of an ecosystem is regularly dissipating energy. Two laws of thermodynamics govern this flow of energy.

According to first law of thermodynamics, energy can be transformed as well as transferred but is neither created nor destroyed.

According to second law of thermodynamics, every activity and energy transformation is accompanied by dissipation of energy.

The maximum energy in an ecosystem is available at lowest or producer level and as energy is transferred from producers to successively higher levels energy level gets diminished. Thus, the correct answer is option B.