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 |
The total number of biodiversity hotspots in the world is:
1. | 25 | 2. | 17 |
3. | 34 | 4. | 51 |
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
Which of the following is a source of an antimalarial drug?
1. | Papaver somniferum | 2. | Cinchona officinalis |
3. | Artemesia species | 4. | Both 2 and 3 |
The bark of the yew tree, Taxus brevifolia, is source of:
1. an antileprosy drug
2. an anticancer drug
3. a broad spectrum antibiotic
4. an analgesic and sedative
A plant, that has invaded many forest lands in India and is also known as Spanish Flag or Red sage, is:
1. | Lantana camara | 2. | Eicchornia |
3. | Parthenium argentatum | 4. | Argemone mexicana |
Which of the following characteristics does not make a species vulnerable to extinction?
1. a large body size
2. small population size and low reproductive rates
3. feeding at a lower trophic level in the food chain
4. fixed migratory route and habitat