NEET BIOLOGY

Detailed explanation-1: -In the given food chain if the amount of energy at fourth trophic level is 5 KJ, then 5000 KJ will be the energy available at the producer level. As only 10% of energy is trasferred to next higher trophic level, above producers, 500 KJ energy will be stored in body of grasshopper and 50 KJ in frog.

Detailed explanation-2: -On average, only about 10 percent of energy stored as biomass in a trophic level is passed from one level to the next. This is known as “the 10 percent rule” and it limits the number of trophic levels an ecosystem can support. living organisms, and the energy contained within them.

Detailed explanation-3: -There is only 10% flow of energy from one trophic level to the next higher level. The loss of energy at each step is so great that very little usable remains after four or five trophic levels. Hence only 4 to 5 trophic levels are present in each food chain.

Detailed explanation-4: -According to Lindeman’s 10% law, only 10% of energy is transferred to next level. If energy available at first trophic level is 10, 000 Joules, then at second trophic level energy available will be 10% of 10, 000 which equals to 1000 Joules.