Photosynthesis Question 43
43. Photochemical reactions in the chloroplast are directly involved in
(a) Formation of phosphoglyceric acid
(b) Fixation of carbon dioxide
(c) Synthesis of glucose and starch
(d) Photolysis of water and phosphorylation of ADP to ATP
Show Answer
Answer : d
Hints & Solution
(d) $CO_2$ is fixed in the stroma of the chloroplast leading to the synthesis of PGA from which glyceraldehyde phosphate is formed. From glyceradehyde phosphate, sugar and starch are formed. All these do not require light. However, photolysis of water and phosphorylation of ADP to ATP requires light energy.
