Question

Where in the organelle are CO2 and H2O stored before they are used in photosynthesis?

A) Stroma
B) Thylakoid membrane
C) Chloroplast envelope
D) Granum

Answer 1

CO2 and H2O are stored in the stroma of the chloroplast before being used in photosynthesis.

Step-by-step explanation:

Before CO2 and H2O are used in photosynthesis, they are stored in the stroma of the chloroplast. The stroma is the liquid-filled space surrounding the thylakoid membranes, where the light-independent reactions of photosynthesis take place. The thylakoid membranes, on the other hand, are responsible for the light-dependent reactions of photosynthesis.