Question

Question 4
In the given food chain, suppose the amount of energy at fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass $\to$ Grasshopper $\to$ Frog $\to$ Snake $\to$ Hawk

(a) 5 k J
(b) 50 k J
(c) 500 k J
(d) 5000 k J

Answer 1

Option (d) is correct.

According to 10% law, only 10% of the energy entering a particular trophic level of an organism is available for transfer to the next higher trophic level. In this food chain, at the 4^th trophic level, only 5kJ energy is available to the snake, so, the energy available at the producer level will be 5000 kJ.