Q. No.
Which of the following is not a reason that accounts for greater biodiversity of tropics?
| 1. | availability of more solar energy |
| 2. | more niche specialization |
| 3. | more time for species diversification |
| 4. | large seasonal variations in environmental factors |
Although, India has only 2.4 % of world’s area, its share of global species diversity is about:
| 1. | 3% | 2. | 5% |
| 3. | 8% | 4. | 11% |
Approximately, what number of species have been identified, named and studied?
| 1. | 1.0 million | 2. | 1.5 million |
| 3. | 1.7 million | 4. | 2.0 million |
The greatest biodiversity on the earth is found in:
| 1. | African grasslands |
| 2. | Amazonian rain forest in South America |
| 3. | Western Ghats in India |
| 4. | Nile delta in Egypt |
The relation between species richness and area for a wide variety of taxa on alogarithmic scale is a:
| 1. | rectangular hyperbola | 2. | straight line |
| 3. | sigmoid curve | 4. | circular circle |
Biodiversity loss is now one of the world’s most pressing crisis. The primary reason for this is that:
| 1. | we cannot do anything about it |
| 2. | we are not responsible for this loss |
| 3. | we still do not know its entire extent |
| 4. | it is only affecting the developing countries |
Between community, diversity is known as:
| 1. | alpha diversity | 2. | beta diversity |
| 3. | gamma diversity | 4. | delta diversity |
Rice grown in Asia is protected from four main diseases by gene received from a single wild rice species that is:
1. Oryza nivara
2. Oryza indica
3. Oryza sativa
4. Oryza orientalis
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