Question

Correctly match the Microorganisms with their respective Nutrition and energy requirement.

 

• A. P-2; Q-1; R-4; S-3
• B. P-2; Q-1; R-3; S-4
• C. P-1; Q-2; R-4; S-3
• D. P-4; Q-1; R-2; S-3

Hint:

Understanding the categories of microorganisms based on their energy and carbon sources can help clarify their metabolic processes and ecological roles.

Answer 1

The Correct Option is A

Step 1: Understand the definitions of each type of microorganism.

Photolithoautotrophs (P) are organisms that use light energy and carbon dioxide as their carbon source. They get their electrons from light energy, which is typical for photosynthetic organisms like plants and certain bacteria.

Chemoorganoheterotrophs (Q) use organic compounds as both energy and carbon sources. These organisms cannot synthesize their own food and instead rely on organic matter.

Chemolithoautotrophs (R) are organisms that use inorganic molecules (such as hydrogen sulfide or ammonia) as their energy and electron source, but they derive carbon from organic sources.

Photoorganoheterotrophs (S) use light energy and organic compounds as both their electron donor and carbon source.

Step 2: Match the microorganisms with their energy sources.

P - 2: Photolithoautotrophs use light energy and CO₂ as their carbon source.
Q - 1: Chemoorganoheterotrophs use organic compounds as their energy, hydrogen, electron, and carbon sources.
R - 4: Chemolithoautotrophs oxidize reduced inorganic molecules for energy and electrons, but derive carbon from organic sources.
S - 3: Photoorganoheterotrophs use light energy and organic compounds as both their electron donor and carbon source.

Thus, the correct answer is \( \boxed{(A)} \).