Botany - Biodiversity and its Conservation Question with Solution | TestHub

Non-native or alien species are often introduced inadvertently for their economic and other uses. They often become invasive and drive away from the local species. These species are considered to be the second major cause of extinction of species (the first being habitat destruction). Water Hyacinth (Eichhornia crassipes) was introduced in Indian water to reduce pollution. It has clogged water bodies including wetlands at many places, resulting in the death of several aquatic plants and animals.Lantana camarahas replaced many species in forest of U.P. and M.P. African catfish,Clarias gariepinus, has been illegally introduced for aquaculture in India. It is threatening native Catfishes (e.g., Clarias bacterachus) of Indian rivers.