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why does cactus grow only in desert?
Plants that thrive in deserts are known as Xerophytes.
Unlike plants which have thick foliage and thin stems, the stems of this plant are thick and succulent. These plants are large in size and have an expandable stem that helps them to store water. During the rains, water is absorbed by a large network of roots which is then stored in the ribbed, expandable stems. The leaves have been modified into thin spikes to reduce transpiration. The cactus plant has a long lifespan and grows very fast.


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