How vascular bundles are arranged. In Dicots , they form a ring; in Monocots , they are scattered throughout the ground tissue.
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A free, peer-reviewed textbook from Rice University that covers plant structure in high detail. How vascular bundles are arranged
The study of the mesophyll (photosynthetic cells), stomata (gas exchange), and venation patterns. 3. Secondary Growth they form a ring
The "growth engines" of the plant. Includes Apical meristems (roots/shoots tips for length) and Lateral meristems (vascular cambium for thickness).
The gold standard for a clear, concise introduction to "Anatomy of Flowering Plants."