How does photosynthesis yield sugar? sumarize how the light-capturing reactions a?

Answer
            Photosynthesis yield sugar in two main steps

1. Light reaction
                            In this step plant absorb sunlight which cause photolysis of water and excitation of electron. this electron flow through Z-scheme and atlast enter into NADH,  the end product of light reaction is ATP and NADH₂.

2. DArk reaction.
In this step ATP and NADH₂ are used as raw materials. it occurs in stroma of chloroplast. here CO₂ is used through Calvin cycle and at the end glucose is prepared.