LIFE SCIENCE

Detailed explanation-1: -According to this law, only 10 per cent of the energy entering a particular trophic level of organisms is available for transfer to the next higher trophic level.

Detailed explanation-2: -Ecological efficiency is the efficiency of transfer of energy from one trophic level to the other. Ecological efficiency = Net primary productivityGross primary productivity×100. Productivity is the rate of biomass production.

Detailed explanation-3: –Trophic level exchange proficiency (TLTE) measures the measure of energy that is moved between trophic levels. So, the correct answer is ‘Chemical energy’.

Detailed explanation-4: -The transfer of energy from one trophic level to next trophic level follows the 10 percent law known as Lindeman’s law of trophic efficiency which states that the efficiency of energy transferred from one trophic level to the next higher trophic level is about 10%.