According to the International Union for Conservation of Nature (IUCN), which of the following sequences shows groups with the highest percentage of species in danger of extinction, from most endangered (on the left) to least endangered (on the right)?
A) plants → amphibians → birds
B) amphibians → birds → plants
C) birds → plants → amphibians
D) plants → birds → amphibians

Question

Quizplus · Accepted Answer

According to the IUCN Red List, amphibians are the most threatened group of species, with over 30% of species considered to be at risk of extinction. Birds are the second most threatened group, with approximately 13% of species at risk. Plants, while still facing threats, have a much lower percentage of species in danger of extinction, with only around 3% at risk according to the IUCN. Therefore, the correct sequence from most to least endangered is amphibians, birds, and plants, which is shown in option B.