Biological treatment of water pollution is done with the help of
Options
(a) phytoplanktons
(b) fungi
(c) lichen
(d) none of these
Correct Answer:
phytoplanktons
Explanation:
Water hyacinth (phytoplankton), can purify water polluted by biological and chemical wastes-water hyacinth has remarkable capacity to accumulate poisonous metals including radioactive substances.