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Which one of the following statements is NOT correct?
The micro-organisms involved in biodegradation of organic matter in a sewage polluted water body consume a lot of oxygen causing the death of aquatic organisms.
Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries
Water hyacinth grows abundantly in eutrophic water bodies and leads to an imbalance in the ecosystem dynamics of the water body
The amount of some toxic substances of industrial waste water increases in the organisms at successive trophic levels.
Answers (1)
The correct answer is Option 2) Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries.
This statement is not correct. Algal blooms caused by excess organic matter, particularly from sources like agricultural runoff or sewage pollution, can have negative impacts on water quality. The excessive growth of algae can deplete oxygen levels in the water, leading to oxygen-deprived zones harmful to aquatic organisms. It can also block sunlight from reaching other aquatic plants, affecting their growth. Additionally, algal blooms can lead to the release of toxins harmful to fish and other organisms.
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