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?
This questions was previously asked in
UPSC CSP Previous Year Paper (2023)
Only one
Incorrect AnswerOnly two
Incorrect AnswerExplanation:
High temperature: Certain microorganisms, known as thermophiles and hyperthermophiles, can thrive at temperatures above the boiling point of water. They are often found in environments like hot springs and hydrothermal vents.
Low temperature: Psychrophiles or cold-loving microbes can grow at temperatures below the freezing point of water. They are adapted to cold environments such as polar regions and deep-sea habitats.
Acidic environment: Acidophiles are organisms that thrive under highly acidic conditions, often at a pH below 3. They are found in environments like acidic mines and acidic hot springs.
Thus, all three statements are correct.
![]()
By: Parvesh Mehta