Which terrestrial biome represents the largest contiguous forest ecosystem on Earth, circling the subarctic high latitudes of North America and Eurasia with dense stands of coniferous evergreen trees?
Answer and explanation
Correct answer: A. Taiga (Boreal Forest)
- Step 1: Extending across vast stretches of Russia, Canada, Scandinavia, and Alaska, this circumpolar biome experiences long, frigid winters and short, moist summers.
- Step 2: The Taiga (or Boreal Forest) is dominated by cold-tolerant coniferous gymnosperms (spruce, fir, larch, and pine) with needle-like leaves and acidic podzol soils, forming the planet's largest terrestrial biome.
Answer
Taiga (Boreal Forest)
Why not the others: 'Temperate Deciduous Forest' Temperate deciduous forests consist of broadleaf trees that shed their leaves seasonally, found in milder mid-latitudes; 'Tropical Rainforest' Tropical rainforests are dense, highly biodiverse equatorial broadleaf biomes characterized by year-round heat and rain; 'Arctic Tundra' The Arctic tundra is a treeless biome situated north of the taiga where extreme cold and permafrost prevent tree growth.
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