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Q15 (CDS-I/2018) Geography › World Physical Geography › Natural vegetation biomes Answer Verified

Statement I : In Tundra climate, biodiversity is comparatively less. Statement I : Tundra climate has less reproductive warm period.

Result
Your answer: —  Â·  Correct: A
Explanation

Statement I is true as the Tundra biome is characterized by low biotic diversity and a simple vegetation structure [2]. This low biodiversity is a direct result of the extreme climatic conditions that only a few hardy species can adapt to. Statement II is also true and provides the correct explanation for Statement I. The Tundra climate is defined by long, harsh winters and a very brief, cool summer, often referred to as a short growing or reproductive season lasting only 50 to 90 days [1]. This limited 'warm period' restricts the time available for plants to grow, flower, and produce seeds, which in turn limits the energy available for higher trophic levels. The presence of permafrost further restricts root growth and nutrient availability, reinforcing the low biodiversity caused by the short reproductive window [1].

Sources

  1. [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 3: Terrestrial Ecosystems > 3.1. TUNDRA > p. 24
  2. [1] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 3: MAJOR BIOMES > 11. Tundra and Alpine Tundra Biomes Tudra biome > p. 18
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