Correct Option (c)
All three statements are correct. These statements describe the capabilities of extremophiles, which are microorganisms adapted to thrive in environments considered extreme in terms of temperature, pH, salinity, or pressure.
- Statement 1: Correct. Thermophiles and hyperthermophiles are microorganisms that can grow optimally at high temperatures, some even exceeding the boiling point of water (100°C). For instance, certain archaea found in hydrothermal vents can thrive at temperatures well above 100°C.
- Statement 2: Correct. Psychrophiles are microorganisms adapted to grow and reproduce at low temperatures, including those below the freezing point of water (0°C). They are commonly found in polar regions, glaciers, and deep-sea environments.
- Statement 3: Correct. Acidophiles are microorganisms that can grow in highly acidic environments, often with a pH below 3. Some acidophilic bacteria and archaea can tolerate and even require pH levels as low as 0 or 1, such as those found in acid mine drainage sites.
Incorrect Options
Options (a), (b), and (d) are incorrect because all three statements accurately describe the existence and characteristics of various types of extremophilic microorganisms, demonstrating their remarkable adaptability to extreme environmental conditions.