Extremophile microorganisms — above boiling point, below freezing point, pH below 3
Question
Consider the following statements: How many of the above statements are correct?
- 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.
Options
Only one
Only two
All three
None
Explanation
All three statements are correct. These refer to extremophiles, a resilient class of microorganisms (mostly archaea). Hyperthermophiles thrive in hydrothermal vents above 100°C. Psychrophiles survive in glacial ice below 0°C. Acidophiles flourish in extreme acidic conditions, such as acid mine drainage or volcanic springs, with a pH well below 3.
Answer: (c).
Question details
Year
2023
Paper
GS Paper 1
Question
Q18
Subject
Science & Technology
Sub-topic
Health & Medical Science
Type
How-many counting
Difficulty
Easy
Nature
Static
Source hint
NCERT Biology Cl.11 Ch.2
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