Question

During photosynthesis, plants take in ___ gas and release ___ gas.

• A. carbon dioxide, oxygen
• B. oxygen, carbon dioxide
• C. oxygen, methane
• D. water vapour, methane

Answer 1

The correct option is A

carbon dioxide, oxygen

The process by which the plant leaves absorb carbon dioxide to produce glucose (sugar) and oxygen is called photosynthesis. Photosynthesis happens in the presence of sunlight.
$\mathrm{Carbon}\mathrm{dioxide}+\mathrm{Water}\stackrel{\mathrm{Sunlight}}{\to }\mathrm{Sugar}+\mathrm{Oxygen}.$