The mitochondria and chloroplasts (for plant cells)
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.
Answer: This is the long-term carbon cycle. So, carbon takes up various forms: glucose in plants, carbon dioxide in the air and hydrocarbons like coal.