Select the correct statement. 

The correct answer is The pyramid of energy is always upright. 

Key Points

• A pyramid of biomass is a graphical representation that shows the population at each level of the food chain.
• Producers occupy the base with the highest biomass.
• The relationship between numbers, biomass, energy, or bio productivity of an ecosystem can be represented by a pyramid known as the ecological pyramid.
• The trophic level is the place that a living organism occupies in a food chain.
• In a biomass pyramid, producers are at the base, followed by herbivores and then carnivores at the top.
• The pyramid of biomass shows the flow of energy from producers to consumers.
• 10 percent of the energy gets transferred to the next trophic level and the rest is either utilized for metabolic processes or excreted out.

Additional Information

• Carnivores that eat herbivores are called secondary consumers.
• A separate trophic level, the decomposers or transformers, consists of organisms such as bacteria and fungi that break down dead organisms and waste materials into nutrients usable by the producers.
• Primary consumers make up the second trophic level. They are also called herbivores.