Question

Which of the following is a simplified equation of photosynthesis?

• A. CO${}_2$ +2 H${}_2$O $\to$ C${}_5$H${}_{10}$O${}_4$+H${}_2$O+O${}_2$
• B. CO${}_2$ + 2H${}_2$O $\to$ (CH${}_2$O)${}_n$ + O${}_2$
• C. CO${}_2$ + 2H${}_2$O $\to$ C${}_3$H${}_6$O${}_3$ + CO${}_2$ + O${}_2$
• D. 6CO${}_2$ + 12H${}_2$O $\to$ C${}_6$H${}_{12}$O${}_6$ + 6O${}_2$ + 6H${}_2$O
  

Answer 1

The correct option is D 6CO${}_2$ + 12H${}_2$O $\to$ C${}_6$H${}_{12}$O${}_6$ + 6O${}_2$ + 6H${}_2$O

• Photosynthesis is the process by which green plants make their own food from carbon dioxide and water in the presence of sunlight. The prepared food is glucose.
• To prepare one molecule of glucose, by the process of photosynthesis six molecules of carbon dioxide and six molecules of water are required. Six oxygen molecule are released as a byproduct.

Thus, the correct answer is '6CO${}_2$ + 12H${}_2$O $\to$ C${}_6$H${}_{12}$O${}_6$ + 6O${}_2$ + 6H${}_2$O'.