Correct Answer: 5

Solution : The correct option is 5.

The natural vegetation of India is broadly divided into five groups. These are:

1. Tropical evergreen forests: These forests are found in regions with heavy rainfall throughout the year, typically in the Western Ghats, northeastern states and parts of the Andaman and Nicobar Islands.
2. Tropical deciduous forests: This type of vegetation is predominant in areas with a distinct dry season. The trees shed their leaves during the dry season.
3. Thorny scrubs: Thorny scrubs are found in arid and semi-arid regions where rainfall is scarce.
4. Mountain forests: These forests are found in the mountainous regions of India.
5. Mangrove forests: Mangrove forests are found in coastal areas, particularly along the delta regions and estuaries of rivers.