| Consider the following statements regarding threat perspective of IUCN. |
| 1. A species is critically endangered when probability of extension of 80% of population in 10 years or 3rd generation. |
| 2. A species is vulnerable when the probability of extension of 10% in 100 years. |
| 3. Near threatened species are those which are close to qualifying for vulnerable. |
| 4. A species is endangered when the probability of extension of 20% in 20 years or 5th generation. |
| Which of the statements given above are correct? |
A) 1 and 2
B) 1 and 3
C) 2, 3 and 4
D) All of these
Correct Answer: D
Solution :
[d]| IUCN criteria for Critically Endangered Species |
| 1. An obserbed, estimated, inferred or suspect reduction of at least 80% over the last 10 years or 3rd generation. |
| 2. Probability of extension of 50% of population in 10 years or 3rd generation. |
| Endangered Species |
| 1. An observed, estimated, inferred or suspected reduction of at least 50% over the last 10 years or 3rd generation. |
| 2. Probability of extension of 20% in 20 years of 5th generation Vulnerable Species |
| Vulnerable Species |
| 1. An observed, estimated, inferred or suspected reduction of at least 20% over the last 10 years or 3rd generation. |
| 2. Probability of extension of 10% in 100 years. |
You need to login to perform this action.
You will be redirected in
3 sec
