You would expect 25 Kcal of energy stored in trophic level 4.
Explanation:
Energy flow in the ecosystem follows 10% law according to which 10% of the energy in the lower trophic level is transferred to the next trophic level.
In this example grass belongs to the first trophic level, producers.
Energy of grass=25000Kcal
Energy transferred to trophic level 2=10% of 25000=2500
10% of the energy in trophic level 2 is transferred to trophic level 3.
Hence energy at trophic level 3=10% of 2500=250Kcal
Energy transferred to trophic level 4=10% of energy in trophic level 3
=10% of 250=25Kcal
Energy to be stored in trophic level 4=25Kcal
25 Kcal is the amount of energy stored in trophic level 4.
This is defined as the position of an organism in the food chain. Energy flow in the ecosystem involves 10% of the energy in the lower trophic level being transferred to the next trophic level.
In this example grass belongs to the first trophic level.
Energy of grass(level 1)=25000 Kcal
Level 2 = 10/100 × 25000 Kcal = 2500 Kcal.
Level 3= 10/100 × 2500 Kcal = 250 Kcal
Level 4 = 10/100 × 250 = 25 Kcal.
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