Question

what are the green disks in the chloroplasts called? what reaction takes place in the thylakoids? where does the calvin cycle happen?

Explanation:

1. The Calvin cycle occurs in the stroma of chloroplasts. It is the light - independent reaction of photosynthesis where carbon dioxide is fixed to produce carbohydrates.
2. The reactions that take place in the thylakoids are the light - dependent reactions. These reactions involve the absorption of light energy, splitting of water molecules, and generation of ATP and NADPH.
3. The green disks in the chloroplasts are called grana. Each granum is a stack of thylakoids.

Answer:

1. Stroma of chloroplasts
2. Light - dependent reactions
3. Grana