- 1(current)
Q. No.1. Co-extinctions
2. Habitat loss and fragmentation
3. Over exploitation for economic gain
4. Alien species invasions
1. Over-exploitation, habitat loss and fragmentation
2. Climate change only
3. Over-exploitation only
4. Habitat loss and fragmentation only
1. Natality
2. Population explosion
3. Competition
4. Biodiversity loss
Which of the following come under the "Evil Quarter"?
| (a) | Habitat loss and fragmentation | (b) | Over-exploitation |
| (c) | Alien species invasion | (d) | Mortality |
| (e) | Competition | ||
Choose the correct answer from the options given below:
| 1. | (a), (c) and (d) | 2. | (b), (c) and (d) |
| 3. | (a), (b) and (c) | 4. | (a), (b) and (d) |
Endemism refers to:
1. Species richness
2. Species evenness
3. Species confined to that region
4. Species diversity
The decline in the population of Indian native fishes due to the introduction of Clarias gariepinus in river Yamuna can be categorised as:
1. Co-extinction
2. Habitat fragmentation
3. Over exploitation
4. Alien species invasion
Which of the following is correctly matched?
1. Arenchyma - Opuntia
2. Age pyramid - Biome
3. Parthenium hysterophorus - Threat to biodiversity
4. Stratification - Population
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
2. Habitat loss and fragmentation
3. Co-extinctions
4. Over-exploitation
- 1(current)
Q. No.
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