Question

Given below is an imaginary pyramid of biomass. Which of these organisms, possibly constitute the different trophic levels?

• A. PPs are insects and PCs are small insectivorous birds
• B. Level PP is made up of phytoplanktons and level PC constitute small fishes
• C. Level PP constitute peepal trees and PCs are sheep
• D. Level PP is rats and level PC is cats

Answer 1

The correct option is B Level PP is made up of phytoplanktons and level PC constitute small fishes

The inverted shape of the pyramid typically refers to the pyramid of biomass in an aquatic ecosystem specifically in the oceans where the primary produces (PP) are the phyhtoplanktons and primary consumers (PC) are the small fishes feeding on them. In oceans, a food chain typically starts with phytoplankton and ends at predatory fish. In terms of the biomass of these organisms phytoplanktons have the least biomass measure when compared to the organisms in the higher trophic levels.