Answer: Eichhornia crassipes.
- A Lantana camara
- B Cynodon dactylon
- C Eichhornia crassipes
- D Parthenium hysterophorus
Correct answer: C. Eichhornia crassipes
Explanation: Eichhornia crassipes (water hyacinth), introduced into India, grows rapidly and chokes water bodies, reducing oxygen and threatening aquatic life; it is called the terror of Bengal.
Concept context
Levels of biodiversity, species richness patterns, threats (HIPPO), and conservation strategies. Always in NEET.