Question

Identify the type of ecological pyramid?

• A. Pyramid of grassland on the basis of biomass
• B. Pyramid of grassland on the basis of number
• C. Pyramid of aquatic ecosystem on the basis of biomass
• D. Pyramid of energy is grassland

Answer 1

Answer: (C)

Pyramid of aquatic ecosystem on the basis of biomass

The living weight (biomass) of the members of the food chain present at any one time forms the pyramid of the biomass. In the grassland ecosystem, the characteristic feature of the pyramid of biomass is the gradual decrease of biomass at each trophic level i.e. from producers to consumers and thus their pyramid of biomass is upright in shape. But, in the case of the aquatic ecosystem, the producers are typically phytoplanktons with least biomass and the biomass increase gradually in each trophic level. Hence, the pyramid of aquatic ecosystems on the basis of biomass is inverted in shape.

So, the correct answer is option C, Pyramid of aquatic ecosystem on the basis of biomass.