The species which is living outside its range and was transported by humans to another area is called exotic species. Examples of such species in India are:
\(Lantana~camara\)
\(Lantana~camara\) is a troublesome weed that is very adaptive and reproduces fast. As a result these plants become invasive. It is toxic to livestock animals.
Water Hyacinth
\(Eichhornia~crassipes\) or water hyacinth is a free-floating aquatic plant native to America. It is a freshwater weed also found in polluted water and is regarded as a troublesome aquatic plant. It reproduces quickly, competing with other aquatic plants for nutrients. The decay of this plant causes a reduction in dissolved oxygen resulting in death of aquatic animals.
Final answer
a. \(Lantana~camara\), Water Hyacinth.