Home PYQs UPPSC UPPSC MCQs Prelims 2019 (GS Paper I)

Question

The amount fo energy during transfer from one trophic level to another in an ecosystem:

  1. Increases
  2. Decreases
  3. Remain Constrant
  4. May increase or decrease

Answer:

Option B: Decreases

Detailed Solution:

The correct answer is “Decreases”.

The amount of energy during transfer from one trophic level to another in an ecosystem decreases.

This is known as the 10% law, which states that only about 10% of the energy is passed on to the next trophic level, while the rest is lost primarily as heat.