From Wikipedia, the free encyclopedia
木質部（英文：Xylem）係維管束植物嘅運輸組織，負責將根吸收嘅水分同埋溶解喺水入面嘅離子送去棵植物嘅上半部分，畀其他器官同組織去用，另外木質部重起到支撐植物嘅作用。木質部一般由導管、管胞、木射線、薄壁組織同埋木纖維組成。
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