Question

Which ecological pyramid is always upright?

• A. Pyramid of biomass
• B. Pyramid of energy
• C. Pyramid of number
• D. Both a and c

Answer 1

The correct option is B Pyramid of energy

Pyramid of energy is a graphical representation of amount of accumulated energy per unit area in different trophic levels of a food chain. The energy is highest at the producer level. There is gradual decrease in energy level and this happens due to the 10% law of energy transfer (where only 10% of total energy is transferred from one level to another ). Hence, pyramid of energy can never be inverted and is always upright.