Leaf Venation refers to the pattern of arrangement of veins (vascular bundles) in a leaf blade (lamina). Veins provide structural support to the leaf and transport water, minerals, and food between the leaf and the rest of the plant.
The Calophyllum plant is an exception — it is a dicot but shows parallel venation. Similarly, some plants show curved parallel venation (e.g., Banana, Canna). Biology is full of exceptions!
1. Reticulate Venation (Net-like): The veins form a network (net-like pattern) with no clear parallel arrangement. There is a prominent midrib from which smaller veins branch out in all directions.
2. Parallel Venation: All the veins run parallel to each other and the midrib. They do not form a network.
Quick identification trick: Looking at the venation pattern of a leaf can help you quickly identify whether a plant is a monocot or a dicot — which then tells you about its root system, flower petals, seed structure, and much more.
A mango leaf shows **reticulate (net) venation**. Mango is a dicot plant, so its leaves have a prominent midrib with a branching network of secondary veins.
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