Question

Photolithotrophs (photoautotrophs) obtain energy from

• A. Radiations and carbon from inorganic compounds
• B. Radiations and carbon from organic compounds
• C. Organic compounds
• D. Inorganic compounds

Answer 1

Answer: (A)

Radiations and carbon from inorganic compounds

Photoautotrophs are organisms that carry out photosynthesis. Using energy from sunlight, carbon dioxide and water are converted into organic materials to be used in cellular functions such as biosynthesis and respiration.

So, the correct option is 'Radiations and carbon from inorganic compounds'.