An inverted pyramid of biomass can be found in:

Sea

The correct answer is Option (4) → Sea

The green plant in the ecosystem are called producers. In a terrestrial ecosystem, major producers are herbaceous and woody plants. Likewise, producers in an aquatic ecosystem are various species like phytoplankton, algae and higher plants

The pyramid of biomass in the sea is often inverted due to the higher biomass of fishes compared to phytoplankton. Phytoplankton, which are microscopic photosynthetic organisms, serve as the primary producers in marine ecosystems. They convert sunlight and nutrients into organic matter and form the base of the food chain.

The pyramid of biomass in sea is generally inverted because the biomass of fishes far exceeds that of phytoplankton.The producers are smallest organisms while carnivores are large in size. Consequently , there is a gradual increase in biomass of organisms at successive trophic levels from producers onwards to top carnivores resulting in inverted pyramid. Thus, the biomass of phytoplanktons will be smaller than that of zooplanktons; the biomass of zooplanktons will be lesser than of primary carnivores ( e.g., small fishes).

Grassland: Similar to forests, grasslands have a larger biomass of producers (grasses and other plants) compared to primary consumers (herbivores like insects ,rats , mice and grazing animals).

Forest: In forest ecosystems, producers (trees and other plants) have a larger biomass compared to primary consumers (herbivores). The large biomass of trees contributes significantly to the overall biomass.

In a tundra ecosystem, the biomass pyramid is typically upright rather than inverted. This is because tundra ecosystems have a relatively low rate of primary production, but the biomass of producers (such as mosses, lichens, and small shrubs) usually exceeds that of the herbivores and predators in the ecosystem.