Question

The pyramid of ____ shows a decrease in both numbers and ____.

• A. number, energy
• B. biomass, energy
• C. energy, biomass
• D. number, biomass

Answer 1

The correct option is A number, energy

The image represents a pyramid of numbers with a maximum number of producers and a single top consumer i.e the bird. So, as we move up the food chain, the number of organisms in the pyramid decreases. This pyramid also represents the energy flow in the food chain. The producers have maximum energy. At each trophic level there is a loss of energy, so the top consumer has the least energy. So, the pyramid shows both decrease in numbers and energy.