Question

In the given food chain, if plants absorb 1000 Joules of light energy, then how much energy is available for Lion? 

   Plants       →      Deer          →     Lion
(Producer)        (Herbivore)       (Carnivore)

विकल्प

• 10 Joules

• 100 Joules

• 1000 Joules

• 0.1 Joule

Answer 1

10 Joules

Explanation:

In an ecosystem, energy is transferred from one trophic level to the next. However, only 10% of the energy is passed on, while 90% is lost due to heat, respiration, and metabolic activities. This principle is known as Lindeman’s 10% Law of Energy Transfer.

Step-by-Step Energy Transfer:

Energy transfer from Plants to Deer (Herbivores):

• Plants absorb 1000 Joules of light energy from the sun.
• Only 10% of this energy is passed to the Deer, while 90% is lost.

Energy available to Deer = `10/100 xx 1000` = 100 Joules

Energy transfer from Deer to Lion (Carnivores):

• The Deer has 100 Joules of energy.
• Only 10% of this energy is passed to the Lion, while 90% is lost.

Energy available to Lion = `10/100 xx 100` = 10 Joules