Down
1. ENDANGERED
2. RED DATA BOOK
5. DESERTS
Across
1. EXTINCT
3. ENDEMIC
4. BIODIVERSITY
List I (Biosphere Reserve) | List II (States) | ||
A. | Agasthyamalai | I. | Madhya Pradesh |
B. | Nanda Devi | II. | Odisha |
C. | Panchmarhi | III. | Tamil Nadu |
D. | Similipal | IV. | Uttarakhand |
The term ‘biodiversity’ is derived from the two words- ‘bios' which means life and ‘diversity’ i.e, differentiation or variation. Edward Wilson, the sociobiologist was the first to popularise the term ‘biodiversity’ in the year 1992. The term implies the occurrence of various plants and animals along with their variants such as biotypes, ecotypes and genes on earth. In our biosphere, the immense diversity or heterogeneity remains not only at the species level but also, at every level of biological organization that ranges from macromolecules in the cells to biomes.
Biodiversity and Conservation is a topic covered under the fifteenth chapter and Unit 5 of NCERT class 12 biology.