Organisms capable of using CO₂ as principal carbon source are called :

[amp_mcq option1=”Autotrophs” option2=”Heterotrophs” option3=”Parasites” option4=”Decomposers” correct=”option1″]

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UPSC NDA-1 – 2023

Organisms capable of using CO₂ as a principal carbon source are called Autotrophs.

Autotrophs are organisms that can produce their own food using light, water, carbon dioxide, or other chemicals. They are the producers in an ecosystem. They use inorganic sources, like CO₂, to synthesize organic compounds. Photosynthesis is the most common form of energy production for autotrophs, using sunlight to convert CO₂ and water into glucose. Chemosynthesis is another process used by some autotrophs, utilizing energy from chemical reactions.

Heterotrophs, on the other hand, obtain energy and carbon by consuming other organisms or organic matter. Parasites are a type of heterotroph that lives on or inside another organism (the host) and benefits at the host’s expense. Decomposers are heterotrophs that break down dead organic material, returning nutrients to the environment.

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