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| plants with true roots, stems and leaves dispersed by spores because they don't produce seeds |
| plants with the vascular tissues xylem and phloem for transporting water and nutrients |
| collenchyma (kə-lěng'kə-mə) Pronunciation Key
A supportive tissue of plants, consisting of elongated living cells with unevenly thickened, nonlignified walls. Collenchyma cells remain alive at maturity. Compare parenchyma, sclerenchyma. |