CORRECT answer is A - 3, B - 4, C - 1, D - 2.Tropical rain forests are vegetation found in hot and wet equatorial climate.Selvas is a term given to vegetational extravagance in this region.Epiphytes are usually found in the temperate zone or in the tropics.Savanna type of climate is known a is a transitional type of climate found between the equatorial forest and trade WIND hot deserts.It is confined within the tropics.Tall GRASS and short trees SPECIFICALLY grows here.Taiga type of single band coniferous forests are found in Siberia.Taiga is a Russian word for coniferous forest.The POLAR type of climate is found mainly north of the Arctic Circle in the Northern hemisphere.Environment supports only the lowest form of vegetation mosses lichens and sedges.They are also known as the tundra vegetation.