Question

if 500 KJ energy is present at Third trophic Level then the amount of energy absorbed by the producer

Answer 1

Let the Amount of Energy Absorbed by the Producer be : P

We know that : Only 10% of Total Energy is Transferred from One Trophic Level to the Next Trophic Level.

⇒ The Amount of Energy Transferred to 2nd Trophic Level is 10% of P

⇒ 10% of P $\bf{= (\frac{10}{100} \times P) = \frac{P}{10}}$

$\bf{Now : 10\% \; of \; \frac{P}{10}\;Energy\;is \;Transferred \; to \; Third \; Trophic Level}$

$\bf{\implies 10\% \; of \; \frac{P}{10} = (\frac{10}{100} \times \frac{P}{10}) = \frac{P}{100}}$

⇒ The Amount of Energy Present at Third Energy Level is $\bf{: \frac{P}{100}}$

Given : The Amount of Energy Present at 3rd Energy Level is 500 kJ

$\bf{\implies \frac{P}{100} = 500}$

⇒ P = 50000 kJ

⇒ The Amount of Energy absorbed by the Producer is 50000 kJ