a) Tropical Deciduous Forests :
1. Tropical deciduous forests are the monsoon forests.
2. These regions experience seasonal changes.
3. Trees shed their leaves in the dry season to conserve water.
b) Tropical Evergreen Forests :
1. These thick forests occur in the regions near the equator and close to the tropics.
2. These regions are hot and receive heavy rainfall throughout the year.
3. As there is no dry season, these trees do not shed their leaves altogether.
4. This is why they are called evergreen forests.
c) Temperate Evergreen Forests :
1. These forests are located in the mid latitudinal costal region.
2. They are commonly found along the eastern margin of the continents.
d) Temperate Deciduous Forests :
1. The temperate deciduous forests are found in higher latitudes.
2. They shed their leaves in the dry season.
e) Mediterranean Vegetation :
1. The west and the south west margins of the continents are covered by these forests.
2. Mediterranean trees adapt themselves to dry summers with the help of their thick barks and wax coated leaves. These help them to reduce transpiration.
3. These regions are marked for hot dry summers and dry summers and mild rainy winters.
f) Coniferous Forests :
1. Coniferous forests are found in the higher latitudes of Northern hemisphere.
2. These forests are found in abundance in the Himalayas.
g) Tropical Grasslands :
1. These forests grow on either side of the equator up to tropics.
2. This vegetation grows in the areas of moderate to low amount of rainfall.
h) Temperate Grasslands :
1. These are found in mid-latitudinal zones and in the interior part of the continents.
2. Usually the grass is very short and nutritious.
i) Thorny Bushes :
1. These are found in the dry desert like regions.
2. This vegetation cover is scarce here because of scanty rain and scorching heat.
j) Tundra :
1. This vegetation is found in the polar region.
2. The growth of natural vegetation is very limited here.
3. Only mosses, lichens and very small shrubs are found here.
