The correct option is 2 and 3 only.
Explanation
Rubber (Hevea brasiliensis) is primarily an equatorial crop that requires specific climatic conditions to thrive. While it is native to the Amazon basin, it is extensively cultivated in Southeast Asia and parts of India due to favorable environmental factors.
Statement-wise Analysis:
- Statement 1 is Incorrect. While Rubber is fundamentally an equatorial crop, it is not restricted exclusively to tropical zones. Under special conditions, it is also successfully grown in tropical and sub-tropical areas.
- Statement 2 is Correct. Rubber requires a moist and humid climate. It demands heavy rainfall, typically exceeding 200 cm annually, distributed well throughout the year.
- Statement 3 is Correct. The crop requires high temperatures for optimal growth. It thrives in regions where the temperature remains consistently above 25°C.
Key Takeaway:
Rubber cultivation requires a hot and humid climate with rainfall above 200 cm and temperatures above 25°C. Although it is an equatorial crop, it can be cultivated in sub-tropical regions under specific conditions.