Question

Which step is not involved in the carbon cycle?

• A. Photosynthesis
• B. Transpiration
• C. Respiration
• D. Burning of fossil fuels

Answer 1

The correct option is B

Transpiration

The correct answer is option B: Transpiration

The explanation for the correct answer:

Option B: Transpiration:

1. The biological process through the water that is lost from the aerial parts of the plants is called transportation.
2. It is not involved in the carbon cycle as water has no role in the carbon cycle

The explanation for the incorrect answer:

Option A: Photosynthesis:

1. The process of fixing atmospheric carbon by trapping the sun's energy in biological form.
2. In this process, light energy is converted to chemical energy.
3. In photosynthesis, the carbon dioxide along with water is converted to carbohydrate molecule Glucose with the release of oxygen in the atmosphere in the presence of chlorophyll and sunlight.
4. In the carbon cycle, the carbon dioxide in water is converted to organic compounds and released back into the atmosphere by the Decomposition of dead and decaying plants and animals.

Option C: Respiration

1. The process of breakdown of organic substrate to release energy, carbon dioxide, and other byproducts.
2. Respiration is the process by which carbon dioxide is released into the atmosphere

Option D: Burning of fossil fuels

1. The burning of fossil fuels such as coal, and petroleum and the burning of wood and other carbon-containing substances such as forest fires, etc, produces carbon dioxide which returns into the atmosphere.

Final answer: The correct answer is option (B)