Question

In carbon cycle, the process responsible for bringing carbon into its living part is

• A. Photosynthesis
• B. Cellular respiration
• C. Combustion
• D. Decomposition
• E. Fixation

Answer 1

The correct option is A Photosynthesis

Photosynthesis is the process of synthesis of organic compounds in the presence of sunlight using carbon dioxide and water thereby bringing the atmospheric carbon into living organisms. Cellular respiration includes oxidation of these organic compounds to release the stored energy. Combustion is burning of fossil fuel in the presence of oxygen while decomposition is degradation of complex compounds into simpler ones. Conversion of nonusable form of any element (carbon , nitrogen etc) into biologically useful form is called as fixation. Since photosynthesis incorporate carbon into living organisms.

Therefore, the correct answer is option A.