Given below are two statements :
Statement-I : Pyramid of energy is always upright and is the most efficient.
Statement-II : Pyramid of biomass in sea is generally inverted.
In the light of the above statements, choose the most appropriate answer from the options given below :
Text Solution
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Statement-I is correct: The pyramid of energy is always upright because energy flow is unidirectional and decreases at each successive trophic level. As energy moves from producers to consumers, a large portion (roughly 90%) is lost as heat, making it the most efficient way to represent ecosystem dynamics.
Statement-II is correct: The pyramid of biomass in the sea is generally inverted because the standing crop of producers (phytoplankton) at any given time is much smaller than the biomass of the consumers (zooplankton and fish). This is possible due to the high turnover rate and rapid reproduction of the phytoplankton.
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