Consider the following ecosystems :1. Taiga2. Tropical Evergreen3. Tropical Deciduous4. Tundra The correct sequence in decreasing order of the Albedo values of these ecosystems is :
✓ Correct answer: b) 4, 1, 3, 2
ExplanationAlbedo is the measure of a surface’s reflectivity, with higher albedo indicating greater reflection of sunlight.Option (b) is correct : The correct sequence in decreasing order of albedo values is Tundra → Taiga → Tropical Deciduous → Tropical EvergreenTundra (Highest Albedo) : Snow and ice dominate the Tundra landscape, leading to the highest reflectivity (albedo).Snow reflects up to 80–90% of sunlight.Taiga (Second Highest Albedo) : Taiga, or boreal forests, have a lower albedo than tundra but still reflect sunlight during snowy winters.Dense coniferous forests, combined with snow, lead to moderate albedo values.Tropical Deciduous Forest – Moderate Albedo : These forests shed leaves seasonally, and during the dry season, the exposed ground and sparse canopy increase albedo slightly.Albedo ranges from 15% to 20%.Tropical Evergreen Forest – Low Albedo : Dense, evergreen canopies absorb most sunlight due to year- round leaf cover.Albedo is very low, around 10% to 15%.60
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