Q. With reference to the Tundra biome, consider the following statements:
1.The alpine tundra exhibits greater diurnal temperature variation than the arctic tundra.
2.Tundra vegetation is characterized by shallow root systems and short stature due to permafrost and low soil fertility.
3.Large-bodied mammals in the tundra are an example of Gloger’s Rule.
4.In the southern hemisphere, tundra regions are more extensive than in the northern hemisphere due to larger landmass near the South Pole.
Which of the above statements is/are correct?
Answer: A
Notes:
Explanation:
- Alpine tundra, being at high altitudes at various latitudes, experiences strong day-night temperature swings, unlike the more consistently cold Arctic tundra.
- Permafrost prevents deep root penetration, and low nutrients support only low-growing vegetation.
- The large body size and small appendages (ears/tail) are in line with Bergmann’s and Allen’s Rules, not Gloger’s Rule, which relates to pigmentation.
- Tundra is less extensive in the Southern Hemisphere because of the dominance of oceans around Antarctica.
Source: Environment( N.C.E.R.T)
