Question

In the following food chain, 100 J of energy is available to the lion. How much energy was available to the producer? [AI 2017]
Plants → Deer → Lion

Answer 1

hey user

Answer:

Food chain given : Grass -- Deer---Lion.

Grass represent Producers.

According to the 10%law, at each trophic level about 10% energy  of the previous trophic level is passed to next level.

Energy available to  Lion ---100J

Let x be the energy available to Deer.

10% of x =100J

so x =1000J

So deer has received 1000J of energy.

Let Y be the energy available to Grass

Then grass will receive 10%of Y=1000J

Y=10000J

Hence 10,000 joules of energy is available to producers.