Biology · Biodiversity and Conservation · NEET
Yes. NCERT uses the two terms for the same idea: diversity at the ecosystem level. Ecological diversity counts the different KINDS of ecosystems or habitats in an area (desert, forest, wetland, coral reef, etc.), not the number of individual species inside them.
India spans many climate zones and landforms, so it holds many ecosystem types together: deserts, rainforests, mangroves, coral reefs, wetlands, estuaries and alpine meadows. A Scandinavian country like Norway is cold and has fewer ecosystem types (mainly forests, tundra, coasts), so it has lower ecological diversity. NCERT gives this exact India vs Norway comparison.
Species diversity is the number of different species in a place (example: Western Ghats have more amphibian species than the Eastern Ghats). Ecological diversity is one level higher: the number of different ecosystems/habitat types (example: India vs Norway). One counts species, the other counts kinds of habitats.
Genetic diversity (within a species) example: Rauwolfia serpentina shows genetic variation in reserpine content across the Himalayas; India has over 50,000 strains of rice and 1,000 mango varieties. Species diversity example: Western Ghats vs Eastern Ghats amphibians. Ecological diversity example: India vs a Scandinavian country like Norway. NEET often asks you to match the level with its example.
Not necessarily. Ecological diversity is about the variety of ecosystems, not the total species count. A region can have very high ecological diversity because it has many habitat types, even if any single ecosystem is not the richest. Keep the two ideas separate in NEET matching questions.
Try the real previous-year questions from this chapter — each with the answer and a full solution.
It is the variety of different ecosystems or habitat types present in a region, such as forests, deserts, wetlands and coral reefs. It is the third and highest of NCERT's three levels of biodiversity.
A Scandinavian country like Norway. India has greater ecosystem diversity than Norway because India contains many more habitat types.
Deserts, rain forests, mangroves, coral reefs, wetlands, estuaries and alpine meadows. Remembering this list helps you answer ecological-diversity questions directly.
Generally yes, because warm, stable tropical regions support many habitat types and high biodiversity overall, but for NEET the key fact is the India vs Norway ecosystem-level comparison from NCERT.
