What are the common and distinctive structural features of succulents and sclerophytes?

General: the epidermis of succulents and sclerophytes is covered with a thick cuticle and has a waxy coating or pubescence; leaves of stem succulents and sclerophytes are presented in the form of thorns.
Differences: the roots of succulents go shallowly into the soil, and surface roots suck up water, succulents actively store moisture and use it economically; sclerophytes have roots that go deep into the ground, they do not store moisture, but extract it and use it sparingly.

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