Question

The pH range most conducive for life of freshwater plants and animals is

• A. 6.5-7.5
• B. 2.0-3.5
• C. 3.5-5.0
• D. 9.0–10.5

Answer 1

The correct option is A

6.5-7.5

The correct option is A:

Explanation of the correct option:

1. The narrow range of 6.5-7.5 is most suitable for freshwater animals and plants.
2. This range indicates the neutral condition which is favorable.

Explanation of the incorrect option:

Option B:

The range of pH 2.0-3.5 indicates an acidic environment, which is not favorable for freshwater plants and animal

Option C:

The range of pH 3.5-5.0 also indicates an acidic environment, which is harmful.

Option D:

The range of pH 9.0–10.5 indicates an alkaline environment. It disrupts living organisms.

Final answer: The pH range most conducive for life of freshwater plants and animals is 6.5-7.5