Question

$C{O}_2$ and $O_2$ balance is maintained in the atmosphere due to________.

• A. Photorespiration
• B. Photosynthesis
• C. Respiration
• D. Leaf anatomy

Answer 1

The correct option is B Photosynthesis

Plants and photosynthetic algae and bacteria use energy from sunlight to combine carbon dioxide from the atmosphere with water to form carbohydrates. These carbohydrates store energy. Oxygen is a byproduct that is released into the atmosphere. This process is known as photosynthesis.

$C{O}_2$ + $H_{2}O$ + sunlight $\to$ $C{H}_{2}O$ + $O_2$

Hence, the correct answer is option B.