Question

Growth of water hyacinth in the water body leads to the death of fishes because it

• A. drains $C{O}_2$ during photosynthesis
• B. drains $O_2$ during its respiration
• C. promotes the growth of other plants
• D. depletes the mineral nutrients in the water

Answer 1

The correct option is B drains $O_2$ during its respiration

When not controlled, water hyacinth will cover lakes and ponds entirely; this dramatically impacts water flow, blocks sunlight from reaching native aquatic plants, and starves the water of oxygen, often killing fish (or turtles)