Productivity, food chains, trophic levels, biogeochemical cycles, ecological pyramids.
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Q1 · Ecosystems and Energy Flow (Class 12) · EASY
In a grassland ecosystem, if the net primary productivity (NPP) is 8000 kcal/m²/year and the gross primary productivity (GPP) is 10000 kcal/m²/year, what is the respiration loss by plants?
Q2 · Ecosystems and Energy Flow (Class 12) · MEDIUM
In an ecosystem, the energy available at the producer level is 10,000 J. If the 10% energy transfer rule applies, how much energy will be available to tertiary consumers (third trophic level of consumers)?
Q3 · Ecosystems and Energy Flow (Class 12) · MEDIUM
In the nitrogen cycle, which process directly converts atmospheric nitrogen (N₂) into ammonia (NH₃) in soil, making it available to plants?