Tag: classification of threatened species

• Calculating the percentage of existed species that are extinct can be difficult because no one knows exactly how many species there are. 
• Scientists have identified that of all species that have existed on Earth, 99.9 % are now extinct. Many of them perished in five catastrophic events.
• Hence 99% of existed species are extinct.
• So, the correct answer is '99% of existed species are extinct'.
  

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, and position at a higher trophic level favour extinction. Cheetah has become extinct from India.

When there are no more individuals of a species (plant or animal) alive anywhere in the world, the species is said to be extinct. Extinction is also known as the process of dying out. The process is a completely natural part of evolution. But sometimes extinctions happen at a higher and a faster rate than usual. Factors such as large body size, small population, and position at a higher trophic level favour extinction. Mass extinction of species has occurred during Permian, KT Boundary and Pleistocene period.

The dodo is an extinct flightless bird endemic to Mauritius, east of Madagascar in the Indian Ocean. It belonged to the subfamily Raphinae. In 1662, last sighting of the dodo occurred. There's also a phrase saying "As dead as Dodo".

• Draco is a genus of lizards which are also known as flying lizards, flying dragons or gliding lizards. These lizards are able to glide, their ribs and their connecting membrane may be extended to create wings, the hind limbs are flattened and wing-like and a flap of the neck serves as horizontal stabilizers. The Draco lizard became extinct in the early 21st century.
  
• Hence the animal which has become extinct recently is Draco.
• So, the correct answer is 'Draco'

Endangered species is a plant or animal species defined by IUCN as being in immediate danger of extinction because its members have reached a critical level or its habitals have been drastically reduced. A plant, Bentinckia condapanna/nicobarica (member of family Arecaceae) and the animal, Red panda, both are declared as endangered in India. Tamarind, Banyan etc are not endangered in India.

The endangered species are the that are not critically endangered but facing a very high risk of extinction in the wild in the near future. These include.