Consider the following statements about Biodiversity
1. In biosphere diversity exists only at species level, genes level and ecological level.
2. It is the term popularized by socio biologist Robert May.
3. The Western Ghats have a greater amphibian species diversity than the Eastern Ghats
Select the incorrect answer:
1 only
Only 1 and 2
Only 1, 2 and 3
All of the above
Explanation:
In our biosphere immense diversity (or heterogeneity) exists not only at the species level but at all levels of biological organisation ranging from macromolecules within cells to biomes. Biodiversity is the term popularised by the socio biologist Edward Wilson to describe the combined diversity at all the levels of biological organisation.
The most important of them are–
Genetic diversity: A single species might show high diversity at the genetic level over its distributional range. The genetic variation shown by the medicinal plant Rauwolfia vomitoria growing in different Himalayan ranges might be in terms of the potency and concentration of the active chemical (reserpine) that the plant produces. India has more than 50,000 genetically different strains of rice, and 1,000 varieties of mango.
Species diversity: The diversity at the species level. For example, the Western Ghats have greater amphibian species diversity than the Eastern Ghats.
Ecological diversity: At the ecosystem level, India, for instance, with its deserts, rain forests, mangroves, coral reefs, wetlands, estuaries, and alpine meadows has greater ecosystem diversity than a Scandinavian country like Norway.
Source – 12th Biology NCERT chapter biodiversity and conservation P.no. 258
In our biosphere immense diversity (or heterogeneity) exists not only at the species level but at all levels of biological organisation ranging from macromolecules within cells to biomes. Biodiversity is the term popularised by the socio biologist Edward Wilson to describe the combined diversity at all the levels of biological organisation.
The most important of them are–
Genetic diversity: A single species might show high diversity at the genetic level over its distributional range. The genetic variation shown by the medicinal plant Rauwolfia vomitoria growing in different Himalayan ranges might be in terms of the potency and concentration of the active chemical (reserpine) that the plant produces. India has more than 50,000 genetically different strains of rice, and 1,000 varieties of mango.
Species diversity: The diversity at the species level. For example, the Western Ghats have greater amphibian species diversity than the Eastern Ghats.
Ecological diversity: At the ecosystem level, India, for instance, with its deserts, rain forests, mangroves, coral reefs, wetlands, estuaries, and alpine meadows has greater ecosystem diversity than a Scandinavian country like Norway.
Source – 12th Biology NCERT chapter biodiversity and conservation P.no. 258