Question 1 - MCQs from (Past Year Papers & NCERT Exemplar) - Chapter 15 Class 10 - Our Environment

Last updated at July 23, 2026 by

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 → Grasshopper → Frog → Snake → Hawk

(a) 5 kJ

(b) 50 kJ

(c) 500 kJ

(d) 5,000 kJ

 

Answer:

Answer:

According to the  Kj, only 10% of food energy is transferred from one trophic level to the next level.

Therefore, 

10 Percent Law - Teachoo.jpg

Grass is the producer .

Therefore, the energy available at the producer level is 5000kJ.

So, the correct answer is (d).

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Transcript

10 Percent Law Grass 5000kJ 1st trophic level Grasshopper 500kJ 2nd trophic level Frog 50kJ 3rd trophic level Snake 5kJ 4th trophic level

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