Question

Pyramid of energy in a forest ecosystem is

• A. Always upright
• B. Always inverted
• C. Both upright and inverted depending on ecosystem
• D. First upright the inverted

Answer 1

Answer: (A)

The correct option is B Always upright

Pyramid of energy represents the amount of energy which is utilised by organisms at different trophic levels, over a period of time. It is always upright because the producers always have more energy than other trophic levels and as the energy is passed from one trophic level to the next, it continuously decreases. Only 10% of the energy is passed from one trophic level to subsequent higher trophic level and the rest of the energy is lost in the form of heat or in respiration.

So, the correct answer is 'Always upright'.