Mature cells with specific roles, divided into Simple (Parenchyma, Collenchyma, Sclerenchyma) and Complex (Xylem for water and Phloem for food). 2. Anatomy of Vegetative Organs This is usually the "meat" of any PDF on the subject:
The gold standard for a clear, concise introduction to "Anatomy of Flowering Plants."
The study of flowering plants (Angiosperms) generally breaks down into three major structural levels: