Question

Choose the correct sequences

Options

• CO₂ in the atmosphere → decomposers → organic carbon in animals → organic carbon in plants

• CO₂ in atmosphere → organic carbon in plants → organic carbon in animals → inorganic carbon in soil

• Inorganic carbonates in water → organic carbon in plants → organic carbon in animals → scavengers

• Organic carbon in animals → decomposers → CO2 in the atmosphere → organic carbon in plants

Answer 1

CO₂ in atmosphere → organic carbon in plants → organic carbon in animals → inorganic carbon in soil

Explanation:

Carbon is present as a combined state in the atmosphere in the form of carbon dioxide. This C0₂ from the atmosphere is incorporated into life forms through the basic process of photosynthesis. This process converts carbon dioxide into glucose molecules (organic carbon in plants). Animals feed on the plants and utilise the glucose molecules to release C0₂ and energy (organic carbon in animals). The dead plants and animals are then consumed by decomposers and made available as fossil fuel and humus (inorganic carbon in soil).