2024年8月19日 · Parallel venation is a term used in botany to describe the presence of parallel veins. All plants have a vascular, or xylem, system that transports substances up to the leaves. The diagram below shows the xylem elements in a tree-like plant. The key to understanding parallel venation is examining how water is moved through these vessels.

平行脉（parallel venation）是 单子叶植物 所特有的 脉序。 叶片的中脉与侧脉、细脉均平行排列或侧脉与中脉近乎垂直，而侧脉之间近于平行，都属于平行脉。

2018年3月6日 · Parallel venation can be described as the veins showing the parallel arrangement to one another, all over the leaf blade or lamina, while the veins in reticulate venation show network or web-like arrangement all over the leaf blade or lamina.

Compare parallel, pinnate, and palmate venation in leaves. Recognize common leaf margins and shapes. Each leaf typically has a flat, wide portion called the blade (lamina), which is also the widest part of the leaf (Figure 3.4.1.1 3.4.1. 1).

Explore the differences between parallel and reticulate venation. Pinnate parallel venation/unicostate parallel venation – veins emerge from evident midvein found in the centre of the leaf lamina from the base to the apex where veins develop perpendicular to the midvein towards the margin and are parallel to each other.

In parallel venation, the veins of the leaf run parallel to each other from the base to the tip of the leaf. This pattern is commonly seen in monocot plants such as grasses and lilies. On the other hand, reticulate venation is characterized by a network of veins that branch out and intersect with each other, forming a complex pattern.

2018年8月7日 · The main difference between reticulate and parallel venation is that the reticular venation is the presence of a net- or web-like vein patterns on the leaf blade whereas the parallel venation is the presence of parallel patterns of veins on the leaf blade.

2019年3月9日 · Parallel Venation: In parallel venation, the veins run parallel to each other and extend along the length of the leaf without forming an intricate network. Reticulate Venation: In reticulate venation, the veins form a branching network that creates a …

2024年10月4日 · Two primary types of venation exist: parallel venation and reticulate venation. This article delves into the distinct characteristics, functions, and examples of each type, highlighting their significance in plant adaptation and classification.

In parallel venation, the veins in a leaf run parallel to one another on both the sides of the mid-rib (see Figure). The examples of plants having parallel venation in their leaves are : Wheat, Paddy (Rice), Maize, Millet (Bajra), Sugarcane, Bamboo, Barley, Lily and Banana.