Why are leaves reduced to spines in cactus plant
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Most species of cacti have lost true leaves, retaining only spines, which are highly modified leaves. As well as defending against herbivores, spines help prevent water loss by reducing air flow close to the cactus and providing some shade. In the absence of leaves, enlarged stems carry out photosynthesis.
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CACTUS PLANT HAS A VERY LONG ROOT THAT GOES VERY DEEP INTO THE SOIL TO ABSORB WATER. THE LEAVES OF CACTUS AND REDUCED TO SPINES, AS IT HELP IN REDUCING LOSS OF WATER THROUGH TRANSPIRATION..
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