Question

Which of the following processes is / are part of both carbon cycle and oxygen cycle ?

• A. Respiration
• B. Photosynthesis
• C. Transpiration
• D. Both (a) and (b)

Answer 1

The correct option is D

Both (a) and (b)

The correct option is D:

Steps involved in the oxygen cycle are:-

1. All green plants, during the process of photosynthesis, release oxygen back into the atmosphere as a by-product.
2. All aerobic organisms use free oxygen for respiration.
3. Animals exhale Carbon dioxide back into the atmosphere, which is again used by plants during photosynthesis. Now oxygen is balanced within the atmosphere.

The steps involved in the carbon cycle are:-

• Carbon enters the atmosphere as CO2
• CO2 is absorbed by autotrophs such as green plants
• Animals consume plants, thereby incorporating carbon into their system
• Animals and plants die, their bodies decompose, and carbon is reabsorbed back into the atmosphere.