In an ecosystem why is the number of trophic levels of a food chain usually limited ?
[amp_mcq option1=”Lower trophic level has lesser energy than the higher trophic level” option2=”Because of the loss of energy at each trophic level” option3=”Higher trophic level individual can control the lower ones more efficiently” option4=”Limited trophic level makes a food chain less vulnerable to parasites” correct=”option2″]
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UPSC CAPF – 2024
– This drastic reduction in available energy at each successive level limits the biomass and population size that can be supported.
– After a few trophic levels, there is insufficient energy remaining to support a viable population of organisms at a higher level, thus limiting the food chain length.