Q.Write some plants are found in sub alpine forest.

Vegetation is the plant cover of a region, shaped by climate, soil, altitude and human influence. India's tropical, strongly-monsoonal climate splits it into four major zones (wet, intermediate, dry, arid), each supporting a different character of natural vegetation; Tamil Nadu shares this diversity across its stretch from the Gulf of Mannar to the Western Ghats (shared with Kerala, Karnataka, Goa, Maharashtra, Gujarat) and Eastern Ghats (shared with Andhra Pradesh), spanning two of India's ten recognised geographic zones (Coromandel/East Coast and Western Ghats). Vegetation is classified into four broad types. Forest vegetation: Champion and Seth (1968) recognised 16 forest types nationally, 9 of them in Tamil Nadu, under six major classes — Moist Tropical Forests (tropical wet evergreen in Thirunelveli/Kanyakumari/Anamalai; tropical semi-evergreen in Coimbatore/Thirunelveli/Kanyakumari; tropical moist deciduous across several southern districts; and littoral & swamp forests, split into beach, tidal/mangrove — e.g. Pichavaram, Ramanathapuram — and freshwater swamp types), Dry Tropical Forests (tropical dry deciduous, the largest forest type nationally by area, found in every Tamil Nadu district at lower elevation; tropical thorn forests; tropical dry evergreen forests along the coast), Montane Sub-Tropical Forests (Shervaroys, Kollimalai, Pachamalai), Montane Temperate Forests (the state's high-altitude 'sholas' in the Anamalais, Nilgiris and Palani hills), and Sub-Alpine/Alpine Scrub types (Himalayan, outside Tamil Nadu). Grassland vegetation, dominated by Poaceae/Cyperaceae/Fabaceae/Gentianaceae/Asteraceae, splits by elevation into low-altitude grasslands (below 1000 …