The correct option is (d).
Explanation
Tropical Moist Deciduous Forests are the most widespread forest type in India. They typically develop in regions receiving annual rainfall between 100 cm and 200 cm. These forests are known for shedding their leaves for about 6 to 8 weeks during the dry summer season.
Analysis of Species:
- 1. Bamboos: Correct. Bamboos are widely distributed in the Moist Deciduous forests, often growing in clumps or as undergrowth. They are commercially significant for construction, paper pulp, and handicrafts.
- 2. Sal: Correct. Sal (Shorea robusta) is a dominant and highly valuable timber species found in the Moist Deciduous belt, particularly along the Himalayan foothills and the eastern part of the country.
- 3. Sandalwood: Correct. Sandalwood (Santalum album) is a commercially critical species found in the deciduous forests of the Deccan Plateau (mainly Karnataka and Tamil Nadu). It is valued for its fragrant heartwood and oil.
- 4. Mulberry: Correct. Mulberry trees are found in these forest regions. The wood of the Mulberry tree is commercially important for the sports goods industry (e.g., hockey sticks) due to its elasticity, and its leaves are essential for sericulture.
Key Takeaway:
The Tropical Moist Deciduous Forests (Rainfall: 100–200 cm) are the main source of commercially valuable timber in India, characterized by species such as Teak, Sal, Shisham, Sandalwood, and Bamboo.