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| Description: Table 27.2 Overview of Flowering Plant Tissues Tissue Type Simple Tissues Parenchyma Collenchyma Sclerenchyma Complex Tissues Dermal Epidermis Per/'derm Vascular Xylem Phloem Main Components Parenchyma cells Collenchyma cells Fibers or sclereids Epidermal cells, their secretions and outgrowths Cork cambium; cork cells; parenchyma Tracheids, vessel mem— bers; parenchyma cells; sclerenchyma cells Sieve-tube members, parenchyma cells; sclerenchyma cells Main Functions Photosynthesis, storage, secretion, tissue repair Pliable structural support Structural support Secretion of cuticle; pro- tection; control of gas exchange and water loss Forms protective cover on older stems, roots Water—conducting tubes; structural support Sugar—conducting tubes and their supporting cells
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