1. Prepared by
Divya Das. S. S

3.  India has a rich biological diversity .
 It is one of the twelve mega bio-diversity
countries of the world.
 It has nearly 8% of the total number of
species in the world.
 Total no. of plant species in India- 47000
 Flowering plant species- 15000
 This account for 6% in the world’s total no. of flowering
plants.
 Non flowering plant species- 32000
 India occupies 10th place in the world & 4th in
Asia in plant diversity.
 Total no. of animal species- 81000

4.  Natural vegetation refers to a plant
community which has grown naturally
without any human aid and has been left
undisturbed by humans for a long time.
 Itis otherwise known as ‘Virgin
vegetation’.

5.  RELIEF
 LAND
 SOIL
 CLIMATE
 TEMPERATURE
 SUNLIGHT
 PRECIPITATION

6.  ECONOMIC VALUE:
 Wood is a major forest product.
 Other minor products are oil, gums & resins, tans &
dyes, paper & rayon, medicines from herbs & roots
etc.
 ENVIRONMENTAL VALUE:
 Checks soil erosion
 Increases the level of water table.
 Revitalizing the atmosphere.
 Increase the fertility of the soil.
 Modify the temperature,controls wind force & causes
rainfall.
 Natural habitat for plants & animals

7.  International Union for Conservation of
Nature & Natural Resources (IUCN) has
classified the species into various categories
as under:
 Extinct species
 Endangered species
 Vulnerable species
 Rare species
 Endemic species
 Normal species