Q. Which of the following group is facing the maximum threat of extinction?
Solution:
Solution:
Presently more than 15000 species worldwide are facing the threat of extinction, of which are amphibians alone. Amphibians are considered as connective links between fishes and reptiles. They live in aquatic as well as in the terrestrial region. If any habitat gets affected, the entire life cycle of the amphibians shall be affected consequently. Other factors that make them vulnerable are increased level of UV rays that impair their immune system, climatic changes that interfere with breeding process, pollutants that cause eutrophication of water bodies and certain infectious diseases which endanger the amphibians biodiversity.