Distinguish between xeroohytes and hydrophytes.
(i) Tropical Deciduous Forests : These are found in subtropical regions with a distinct dry season. These forests have fewer species and are less dense. Teak is a valuable hardwood tree found in these forests. These are found in monsoon regions of Asia, central America, Brazil and northern Asia.
(ii) Mid-latitude Deciduous Forests : These occur in coastal regions of cool climates. Trees shed their leaves in winter when temperature is below 6°C. These occur in the region of western Europe, north-eastern China, Japan, north-eastern United States etc.
3. Grasslands: Grasses are shallow rooted plants which thrive under varying climatic conditions. They are divided into tropical grasslands and mid-latitude grasslands.
(i) Tropical Grasslands : These occur in the interiors of continents in the tropical zone. These grasses are tall, about 2 metres in height. These are found in equatorial regions of Africa, Brazilian Plateau, Deccan Plateau etc.
(ii) Mid-latitude Grasslands : These occur in the interiors of continents in mid-latitudes receiving moderate rainfall. These grasses are short and trees are absent. These are found in regions of Russia, U.S.A., Canada and South African plateau.
Mediterranean forests:
1. These forests are found in the middle latitudes.
2. These forests are found in the western margins of the continents.
3. Trees of these forests are having small leaves.
4. Shrubs occur in between the trees.
5. Cork, oak, olive and chestnut are the examples of Mediterranean forests.