Explanation
Correct Answer: Option D — Tropical Thorn Forest. Tropical Thorn Forest is correctly identified as small leaves, thorns and deep roots help conserve water. Tropical Thorn Forest is also associated with a xerophytic formation of thorny trees and shrubs. Another identifying fact about Tropical Thorn Forest is that acacia, babul, khejri and cactus-like succulents are typical. A further exam-relevant fact about Tropical Thorn Forest is that small leaves, thorns and deep roots help conserve water. Why the other options are incorrect: • Option A — Montane Forest: Montane Forest is temperature decline with elevation produces clear vegetation zonation. It is incorrect here because Montane Forest is instead associated with vegetation that changes with altitude on mountain slopes. • Option B — Mangrove Forest: Mangrove Forest is specialized roots help plants survive waterlogged and oxygen-poor mud. It is incorrect here because Mangrove Forest is instead associated with salt-tolerant tidal forest of tropical coasts and deltas. • Option C — Shola Forest: Shola Forest is the Nilgiri, Anaimalai and Palani hills contain important shola-grassland landscapes. It is incorrect here because Shola Forest is instead associated with a tropical montane evergreen forest occurring in valley patches. Exam Takeaway: Connect Tropical Thorn Forest with “small leaves, thorns and deep roots help conserve water” and “a xerophytic formation of thorny trees and shrubs” for revision.