Search results
Results from the WOW.Com Content Network
The arrangement of veins in a leaf is called the venation pattern. Frequently, there is one or more main vein (primary vein) and secondary veins that branch from it. Tertiary veins branch from secondary veins (F igure \(\PageIndex{11}\)) .
Oak and cherry tree leaves have pinnate venation. Palmate Venation: The veins radiate in a fan shape from the leaf petiole. Examples include maple and sweetgum leaves.
Leaf venation. Veins in leaves are arranged in different patterns and they are another characteristic that is very helpful in plant identification (Figure \(\PageIndex{7}\)). Pinnate leaf venation is the first to come to mind when we think about a typical leaf.
The arrangement of veins in a leaf is called the venation pattern; monocots have parallel venation, while dicots have reticulate venation. The arrangement of leaves on a stem is known as phyllotaxy; leaves can be classified as either alternate, spiral, opposite, or whorled.
Leaf venation, a nature-optimized hierarchical network consisting of close-packed cells and aligned fibers, can work as a critical highway for the transmission of action potentials, which...
We synthesize classical concepts and the recent literature on a wide range of aspects of leaf venation. We describe 10 major structural features that contribute to multiple key functions, and scale up to leaf and plant performance.
The leaf veins are small channels or capillaries that transport water and minerals to and from the leaf of a plant. They are vascular tissues composed of xylem and phloem cells embedded mainly in the parenchyma and sometimes sclerenchyma cells.
Leaf venation networks are intricate structures that are key to the overall health, growth, and adaptability of plants [1, 2]. These veins are comprised of the xylem and phloem tissues. The xylem is primarily responsible for transporting water and minerals absorbed from the soil out to the leaves, where photosynthesis occurs, while the phloem ...
One basic function of leaf venation is represented by its contribution to the mechanical behaviour of a leaf. Venation geometry and density influences mechanical stability and may affect, for example, susceptibility to herbivory.
Leaf blades also have characteristic patterns of venation. In grasses, the veins lie parallel to each other and to the long edges of the leaf. We call this parallel venation, and it is typical of monocots.