According to Alexander von Humboldt :
1. | Species richness decreases with increasing area of exploration |
2. | Species richness increases with the increasing area, but only up to a limit |
3. | There is no relationship between species richness and the area explored |
4. | Species richness goes on increasing with increasing area of exploration |
1. | species within a genus | 2. | genetic diversity |
3. | ecosystem | 4. | genera within a family |
Red List contains data or information on?
1. all economically important plants
2. plants whose products are in international trade
3. threatened species
4. marine vertebrates only
Statement l: | Rain forests, which used to cover more than 14% of the earth's land surface, are now reduced to 6%. |
Statement II: | The Amazon rain forest has the greatest biodiversity on earth. |
According to Robert May, global species diversity is about:
1. 20 Million
2. 50 Million
3. 7 Million
4. 1.5 Million
In which of the following do both pairs have the correct combination?
1. | In situ conservation/National park Ex-situ conservation/Botanical garden |
2. | In situ conservation/Cryopreservation Ex-situ conservation/Wildlife sanctuary |
3. | In situ conservation/Seed bank Ex-situ conservation/ National park |
4. | In situ conservation/Tissue culture Ex-situ conservation/Sacred groves |
A species facing extremely high risk of extinction in the immediate future is called:
1. Vulnerable
2. Endemic
3. Critically Endangered
4. Extinct