Q. No.
Conservation hotspots are best described as:
| 1. | Areas with large numbers of endemic species that are disappearing rapidly |
| 2. | Areas where people are particularly active supporters of biological diversity |
| 3. | Islands that are experiencing high rates of extinction |
| 4. | Areas where native species are being replaced with introduced species |
One of the following statements is incorrect with reference to biodiversity. Identify it:
| 1. | The richest reservoirs of animal and plant life (high species richness) with few or no threatened species are called 'biodiversity hotspots’ |
| 2. | Biodiversity increases from higher altitudes to lower altitudes |
| 3. | Biodiversity decreases from the equator to polar regions |
| 4. | Depletion in genetic diversity of crop plants is mainly due to the introduction of better varieties with high yield, disease resistance, etc. |
The reasons behind conserving biodiversity can be group into categories which include :
| A. | Narrowly utilitarian |
| B. | Broadly utilitarian |
| C. | Ethical |
| D. | Not utilitarian |
1. A, B
2. A, B, C
3. B, C
4. D
In situ strategies include-
| A. | Biosphere reserve |
| B. | National park |
| C. | Wildlife sanctuaries |
| D. | Sacred forests / lakes |
2. A, B, C
3. B, C, D
4. A, B, C, D
Ex situ strategies include:
A. Botanical garden
B. Zoos
C. Seed / Pollen banks
D. Gene bank and tissue culture
1. A, B
2. A, B, C
3. B, C, D
4. A, B, C, D
According to the concept of species area relations:
| 1. | The number of species in an area increases with the size of the area |
| 2. | Larger species require larger habitat areas than do smaller species |
| 3. | Most species within any given area are endemic |
| 4. | The larger the area, the greater the extinction rate |
The exotic species, introduced in India for its flower and leaf is:
1. Lantana
2. Water Hyacinth (Eicchornia)
3. Parthenium
4. All are correct
Which one the following is false about Habitat loss and fragmentation?
| 1. | This is the most important cause driving animals and plants to extinction |
| 2. | The most dramatic examples of habitat loss come from temperate rainforests |
| 3. | Once covering more than 14% of the earth's land surface, rain forests now cover no more than 6 percent. |
| 4. | The Amazon rainforest harbouring probably millions of species is being cut and cleared for cultivating soya beans or for conversion to grassland for raising beef cattle |
Global species diversity and land area covered by India with respect to world is:
1. 12%, 7%
2. 2.4%, 9%
3. 8.1%, 2.4%
4. 4%, 3%
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