Chapter 191 of 2363 min read
Energy flow, ecological pyramids
Why this is asked: Pyramids of numbers and biomass can both turn upside down — a single large tree supporting swarms of insects, for instance — but the pyramid of energy cannot: every trophic transfer loses energy as heat, so it stays upright without exception.
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- •Given below are two statements: Statement I: In an ecosystem, there is a unidirectional flow of the energy of the sun from producers to consumers. Statement II: Ecosystems are exempted from the 2nd law of thermodynamics. In the light of the above statements, choose the most appropriate answer from the options given below:
- •In an ecosystem, if the Net Primary Productivity (NPP) of the first trophic level is , what would be the GPP (Gross Primary Productivity) of the third trophic level of the same ecosystem?
Open this in the full syllabus view · Botany