GS PrelimsEnvironmentAdaptation2023

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?

A

Only one

B

Only two

C

All three

D

None

Correct Answer: Option C

Explanation

1. Statement 1: Hyperthermophilic microorganisms, particularly certain species of Archaea, have been found to grow in environments such as deep-sea hydrothermal vents where temperatures exceed the boiling point of water (100°C at standard pressure). This statement is correct. 2. Statement 2: Psychrophilic microorganisms are adapted to cold environments and can grow at temperatures below the freezing point of water (0°C). They are found in polar regions, glaciers, and deep oceans. This statement is correct. 3. Statement 3: Acidophilic microorganisms thrive in highly acidic environments. Many bacteria and archaea can grow optimally at pH values below 3, such as those found in acid mine drainage or volcanic areas. This statement is correct. 4. Since all three statements are correct, the correct option is (C) All three.

More Environment PYQs

View all Environment questions →

Master UPSC Revision

Get 10,000+ topic-wise MCQs, spaced repetition, daily CSAT challenges, and detailed performance analytics.

Coming Soon to Play Store
Coming Soon to Play Store