Answer» Correct Answer - Option 1 : an extinct bird
Concept: IUCN (International Union for Conservation of Forests) categorises organism into the following classes based on threat level for extinction Category | Description | Example | Normal Species | Species whose population levels are considered to be normal for their survival | cattle, sal, pine, rodents | Endangered Species: | These are species that are in danger of extinction. | blackbuck, crocodile, Indian wild ass, Indian rhino, lion-tailed macaque | Vulnerable Species | These are species whose population has declined to levels from where it is likely to move into the endangered category in the near future if the negative factors continue to operate | blue sheep, Asiatic elephant, Gangetic dolphin | Rare | Species with a small population may move into the endangered or vulnerable category if the negative factors affecting them continue to operate | Himalayan brown bear, wild Asiatic buffalo, desert fox and hornbill | Endemic | These are species that are only found in some particular areas usually isolated by natural or geographical barriers | Andaman teal, Nicobar pigeon, Andaman wild pig, Mithun in Arunachal Pradesh | Extinct | These are species that are not found after searches of known or likely areas where they may occur | Asiatic cheetah, pink head duck, dodo(flightless bird) |
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Explanation: - Dodo was a flightless bird
- It was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean.
- They were large birds(> 3 ft tall) and were wingless with large beaks as they didn’t have to fly much owing to their isolated habitat
- The last dodo was sighted in the 17th century
- Reason for extinction: Human intervention in their natural habitat, they were not able to adapt to changing environmental conditions once humans invaded the part of Madagascar island they lived in
∴Dodo was a flightless bird
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