**** water plant that has become a troublesome water weed in India is
(a) Cyperus rotundus (b) Eichhornia crassipes (c) Trapa latifolia (d) Trapa bispinosa
Correct Option (b) Eichhornia crassipes
Explanation:
Eichhornia crassipes is a native of America and is exotic species to India. It has become a trouble some weed in many aquatic habitats causing eutrophication and many other ecological problems.
