| Statements I: | Species confined to a particular region and are not found anywhere else are called endemic species |
| Statement II: | Keystone species are usually abundant in an ecosystem |
| Assertion(A): | The conservation of biodiversity is a collective responsibility of all nations. |
| Reason(R): | Biodiversity knows no political boundaries. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | (A) is false, but (R) is true. |