1) If our plants didn't get watered for two weeks and we came back and they were all sad a miserable and dead looking I am sure it would be because they weren't able to photosythensize correctly and thoroughly. H2O is one of the necesary players in the PS process along with CO2 and sun light, so if they didn't get water they wouldn't be able to produce glucose properly which isn't good because photoautotrophs depend on their abilities to produce their own food!
2) Sometimes when stomata are closed it can be a good thing. for example when its a really hot day they will close to prevent loss of their all important H2O. But if the stomata were to be closed for extended periods of time it could be consequential for an autophototroph because although it would still have whatever concentrations of H2O and CO2, once that sunlight triggers the light dependent rxns and then everything gets going you get to the light independent rxns and eventually you end up with O2 that is unnecesary for the plant, but the plant wouldn't be able to release. So that could be a down fall, build ups of O2 in the plant and possibly not enough intake of CO2 and H2O.
1)"H2O is one of the necesary players in the PS process..." HOW?
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