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Questions and Answers
What is the primary reason why algae are suitable for water quality assessment?
What is the primary reason why algae are suitable for water quality assessment?
- They have a long life cycle.
- They are sensitive to changes in water quality. (correct)
- They have a complex reproductive system.
- They are found in all types of aquatic ecosystems.
What happens to the dissolved oxygen in the water when excessive growth of algae occurs?
What happens to the dissolved oxygen in the water when excessive growth of algae occurs?
- It increases significantly.
- It is depleted. (correct)
- It decreases slightly.
- It remains unchanged.
Which of the following ions can cause excessive growth of algae and other aquatic plants?
Which of the following ions can cause excessive growth of algae and other aquatic plants?
- Calcium ions.
- Potassium ions.
- Sodium ions.
- Phosphate, nitrate, and ammonium ions. (correct)
What is the ultimate consequence of excess algae growth on aquatic life?
What is the ultimate consequence of excess algae growth on aquatic life?
What is the indication of polluted water according to the text?
What is the indication of polluted water according to the text?
What factor influences odors, chemical reactions, solubility, palatability, and viscosity in water?
What factor influences odors, chemical reactions, solubility, palatability, and viscosity in water?
Which processes rely on the water's temperature?
Which processes rely on the water's temperature?
What is the ideal temperature range for water?
What is the ideal temperature range for water?
How does temperature affect the palatability of water?
How does temperature affect the palatability of water?
What property of water is affected by temperature, influencing its flow?
What property of water is affected by temperature, influencing its flow?
Study Notes
Algae in Water Quality Assessment
- Algae have rapid reproduction rates and short life cycles, making them valuable indicators of short-term impacts on water quality.
- Excess growth of algae in water indicates polluted water.
- Water soluble compounds containing nitrate, phosphate, and ammonium ions can cause excessive growth of algae and other aquatic plants.
- Excessive growth of algae and aquatic plants can lead to their death and decay.
- The decay of algae and aquatic plants depletes dissolved oxygen in water.
- Depletion of dissolved oxygen in water can kill fish.
Water Quality and Temperature
- Water temperature influences various aspects of water quality, including odors, chemical reactions, solubility, palatability, and viscosity.
- Biological oxygen demand is dependent on water temperature.
- Sedimentation is affected by water temperature.
- Chlorination is influenced by water temperature.
- The ideal water temperature range is between 50-60°F (10-15.5°C).
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Description
Algae are ideal indicators of water quality due to their rapid reproduction and short life cycles. Excess algae growth can indicate polluted water, causing harm to aquatic life.
