UV radiation is absorbed by glass, which is why you will not become sunburned working in a greenhouse.
Infrared radiation has too little energy to be useful in photosynthesis.
The energy of IR radiation is absorbed and produces heat . IR radiation is not absorbed by glass, so a greenhouse will become heated by sunlight. Chloroplasts Photosynthesis occurs in chloroplasts . The stroma is where the production of carbohydrates occurs, using the energy harvested by photosynthesis. Inside the stroma are the thylakoid membranes , neatly folded sacs where the absorption of light and production of chemical energy occurs .