Paper 1 · People, Development and Environment
Statement 1: The presence of high algal content in water indicates that the water is affected by pollution. Statement 2: Cyanobacteria has been accepted as a major indicator of eutrophication in freshwater, as their blooms are common in waters affected by nutrient concentration. Which of the above statements is/are true?
- High algal content in water indicates the water is affected by pollution
- Cyanobacteria are a major indicator of eutrophication in freshwater, as their blooms occur where nutrients are high
ABoth statements 1 and 2 are true ✓ Correct
BOnly statement 1 is true
COnly statement 2 is true
DNeither statement 1 nor statement 2 is true
Correct answer: (A) Both statements 1 and 2 are true — Both statements are true, so that is the answer.
Explanation
★Both statements are true, so that is the answer.
★High algal content does signal that the water is polluted with nutrients.
★So statement one is true.
★Cyanobacteria blooms are a major indicator of eutrophication in freshwater.
★So statement two is also true.
★Since both hold, both statements are true.
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