Nepenthes khasiana
Riccia discolor
Vernonia cinerea
Cynodon dactylon
Nepenthes khasiana is an endemic plant to India. It is the only species of pitcher plant which is endemic to our country. Endemic means a species which is native to a place and is not found anywhere else in the world. Endemic basically means indigenous. The more endemic species at a place more is the biodiversity of that place. For example, the Nilgiri tahr also known as Nilgiri Ibex is endemic to the Nilgiri Hills and some part of Western Ghats of Kerala. So, the correct answer is 'Nepenthes khasiana'.