Question
Consider the following statements:
1. Some microorganisms can grow in environments with temperature above the boiling point of water.
2. Some microorganisms can grow in environments with temperature below the freezing point of water.
3. Some microorganisms can grow in highly acidic environment with a pH below 3.
How many of the above statements are Correct?
Correct Answer — C
Explanation
Thermophiles like *Pyrolobus fumarii* survive above 100°C, psychrophiles grow below freezing (down to around -10°C in some cases), and extreme acidophiles thrive at pH below 3 — all three statements are genuinely correct.