Q. In which of the following ecosystems is the pyramid of biomass inverted?

1. Grassland Ecosystem
2. Pond Ecosystem
3. Forest Ecosystem

Select the correct option from the codes given below:
Answer: Only 2
Notes: In grassland and forest ecosystems, the pyramid of biomass is upright because producers have the greatest biomass. In a pond ecosystem, the pyramid is inverted as the producers (phytoplankton) have the least biomass, while higher trophic levels accumulate more. Thus, an inverted biomass pyramid is characteristic of pond ecosystems.