Examveda
Examveda

O2 released in the process of photosynthesis comes from

A. CO2

B. water

C. sugar

D. pyruvic acid

Answer: Option B

Solution(By Examveda Team)

Photosynthesis is the process by which plants use the energy of light to produce carbohydrates and molecular oxygen (O2) from carbon dioxide (CO2) and water.

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C. decrease in thickness of ozone layer in stratosphere

D. increase in the thickness of ozone layer in troposphere