Given below is one of types of ecological pyramids

This type represents

Biomass is the amount of dried matter which is present in a particular area. Pyramid of biomass in a lake shows spindle-shaped pyramid. Pyramid of energy is always upright as only 10% energy is transferred from one trophic level to another. In this the biomass of the producer is minimum. The primary consumer has the highest biomass while the secondary consumer has lesser biomass than the primary consumer. Pyramid of the number in a grassland is also upright as the producers are always maximum in number than herbivores and carnivores.