<P> The most important benefit of CAM to the plant is the ability to leave most leaf stomata closed during the day . Plants employing CAM are most common in arid environments , where water comes at a premium . Being able to keep stomata closed during the hottest and driest part of the day reduces the loss of water through evapotranspiration , allowing such plants to grow in environments that would otherwise be far too dry . Plants using only C carbon fixation , for example , lose 97 % of the water they uptake through the roots to transpiration - a high cost avoided by plants able to employ CAM . </P>
<P> The most important benefit of CAM to the plant is the ability to leave most leaf stomata closed during the day . Plants employing CAM are most common in arid environments , where water comes at a premium . Being able to keep stomata closed during the hottest and driest part of the day reduces the loss of water through evapotranspiration , allowing such plants to grow in environments that would otherwise be far too dry . Plants using only C carbon fixation , for example , lose 97 % of the water they uptake through the roots to transpiration - a high cost avoided by plants able to employ CAM . </P>
a plant that uses cam photosynthesis would most likely be found
a plant that uses cam photosynthesis would most likely be found
in arid environments
in arid environments