Question

Chemosynthetic autotrophs obtain energy from

• A. Sunlight
• B. Organic matter
• C. Oxidation of inorganic compounds
• D. Respiration

Hint:

Autotrophs: \[ \boxed{ \begin{aligned} \text{Photoautotrophs} &\rightarrow \text{Sunlight}\\ \text{Chemoautotrophs} &\rightarrow \text{Oxidation of inorganic compounds} \end{aligned} } \]

Answer 1

The Correct Option is C

Chemosynthetic autotrophs do not use sunlight. Instead, they obtain energy by oxidizing inorganic substances such as ammonia, hydrogen sulfide, ferrous ions, or nitrites, and use this energy to synthesize organic compounds. Hence, \[ \boxed{\text{Oxidation of inorganic compounds}} \] is the correct answer. Therefore, \[ \boxed{(C)} \]