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Question
Given below is one of the types of ecological pyramids. This type represents
Given below is one of the types of ecological pyramids. This type represents
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Solution
The correct option is D Pyramid of biomass in a lake
Pyramid of biomass is a diagrammatic representation of the amount of organic material (biomass) measured in grams of dry mass per square metre, found in a particular habitat at ascending trophic levels of a food chain. The given figure shows the pyramid of biomass in a lake. It is inverted pyramids of biomass. In a pond or lake ecosystem, the biomass of diatoms and other phytoplankton is quite negligible as compared with that of the crustaceans and small herbivorous fish that feed on these producers. The biomass of large carnivorous fish living on small fishes is still greater. In fact, this is the condition in most aquatic ecosystems, including the sea. Therefore, the correct answer is option C.
Pyramid of biomass is a diagrammatic representation of the amount of organic material (biomass) measured in grams of dry mass per square metre, found in a particular habitat at ascending trophic levels of a food chain. The given figure shows the pyramid of biomass in a lake. It is inverted pyramids of biomass. In a pond or lake ecosystem, the biomass of diatoms and other phytoplankton is quite negligible as compared with that of the crustaceans and small herbivorous fish that feed on these producers. The biomass of large carnivorous fish living on small fishes is still greater. In fact, this is the condition in most aquatic ecosystems, including the sea.
Therefore, the correct answer is option C.
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