Q. Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (Solved)
1. Partheniurn
2. Elephant grass
3. Water hyacinth
4. Both (1) and (2)
- d. Both (1) and (2)
1. Partheniurn
2. Elephant grass
3. Water hyacinth
4. Both (1) and (2)