Final answer:
Photosynthesis takes place in chloroplasts, specifically within thylakoid membranes and the stroma. If a plant's stomata were sealed, it could not perform photosynthesis due to the lack of CO2 intake, affecting the production of G3P. The reactants of photosynthesis are CO2 and water, producing glucose and oxygen.
Step-by-step explanation:
Photosynthesis Structures and Processes
Photosynthesis occurs in the chloroplasts of plant cells, with the main structures involved being the thylakoid membranes where the light-dependent reactions take place, and the stroma which houses the Calvin cycle for the light-independent reactions.
Impact of Sealed Stomata on Photosynthesis
Sealing the stomata would prevent the exchange of gases, thus inhibiting the plant's ability to take in carbon dioxide which is a necessary reactant in photosynthesis. Consequently, the synthesis of G3P would be halted, indicating the crucial role of stomata in photosynthesis.
Photosynthesis Reactants and Products
The reactants for photosynthesis are carbon dioxide and water, while the products are glucose and oxygen. The products play essential roles in ecosystems: glucose as an energy source for organisms and oxygen for respiration.