Correct Option
The correct option is 1 and 3 only.
Explanation
India’s vast latitudinal extent, spanning approximately 30 degrees, plays a crucial role in determining its climatic zones and physical diversity. The Tropic of Cancer (23°30' N) passes through the middle of the country, effectively dividing it into two distinct climatic zones.
Statement-wise Analysis
- Statement 1 is Correct: The southern part of India lies to the south of the Tropic of Cancer. This region falls within the Tropical zone, characterized by high temperatures throughout the year and smaller annual ranges of temperature.
- Statement 2 is Incorrect: The northern part of India lies to the north of the Tropic of Cancer. This region falls within the Sub-tropical (or Warm Temperate) zone, not the tropical zone. It experiences more distinct seasonal changes, including cold winters and hot summers, compared to the southern part.
- Statement 3 is Correct: The large latitudinal extent (from roughly 8°4' N to 37°6' N) results in significant variations in solar insolation and temperature. This climatic diversity directly influences soil types (e.g., laterite in tropical wet areas vs. desert soil in arid regions) and natural vegetation. In the context of Indian geography, this vast extent is also associated with the diversity of landforms found across the subcontinent, ranging from coastal plains in the tropical south to the Himalayan mountains in the temperate north.
Key Takeaway
The Tropic of Cancer divides India into the Tropical zone (South) and the Sub-tropical zone (North). This latitudinal variation is a primary factor responsible for the country's diverse climate, soil types, and vegetation patterns.