Adaptations to dry conditions Drought tolerance

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drought tolerant plants typically make use of either c4 carbon fixation or crassulacean acid metabolism (cam) fix carbon during photosynthesis. both improvements on more common more basal c3 pathway in more energy efficient. cam particularly arid conditions because carbon dioxide can taken @ night, allowing stomata stay closed during heat of day , reducing water loss.


many adaptations dry conditions structural, including following:



adaptations of stomata reduce water loss, such reduced numbers or waxy surfaces.
water storage in succulent above-ground parts or water-filled tubers.
adaptations in root system increase water absorption.
trichomes (small hairs) on leaves absorb atmospheric water.




^ botany online: photosynthesis - c3, c4 , cam. regulation of activity archived july 17, 2007, @ wayback machine.






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