Veinlet Definition & Meaning - Merriam-Webster
noun. vein· let ˈvān-lət. : a small vein. Word History. Etymology. vein entry 1 + -let. First Known Use. 1831, in the meaning defined above. Time Traveler. The first known use of veinlet was in …
3.4.1: External Structure of Leaves - Biology LibreTexts
A palmately compound leaf resembles the palm of a hand, with leaflets radiating outwards from one point (Figure 3.4.1.8 3.4.1. 8). Examples include the leaves of poison ivy, the buckeye tree, or the familiar houseplant Schefflera sp. (common name “umbrella plant”).
Leaf Veins – Definition, Types, and Functions - Science Facts
2023年2月2日 · 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. The outer layer of veins is made of bundle sheath cells. Leaf Veins.
Leaf venation: structure, function, development, evolution, …
2013年4月18日 · Veins are composed of xylem and phloem cells embedded in parenchyma, sometimes sclerenchyma, and surrounded by bundle sheath cells. The vein xylem transports water from the petiole throughout the lamina mesophyll, and the phloem transports sugars out of the leaf to the rest of the plant.
Leaf - Wikipedia
A prominent midvein with secondary veins branching off along both sides of it. The name derives from the ultimate veinlets which form an interconnecting net like pattern or network.
30.8: Leaves - Leaf Structure and Arrangment - Biology LibreTexts
2023年10月31日 · Petioles, stipules, veins, and a midrib are all essential structures of a leaf. Within each leaf, the vascular tissue forms veins. The arrangement of veins in a leaf is called the venation pattern. Monocots and dicots differ in their patterns of venation.
VEINLET Definition & Meaning | Dictionary.com
Indusium straight or rarely curved, fixed lengthwise on the upper side of a fertile veinlet, opening toward the midrib. From Project Gutenberg. veining. Veinlet definition: a small vein. . See …
Morphology of Leaf - Structure, Types, Parts & Modifications
Venation is defined as the arrangement of veins and the veinlets in the leaves. Different plants show different types of venation. Generally, there are two types of venation: Reticulate venation: In a reticulate venation, the veinlets are randomly arranged and form a complex network of veinlets. Ex: Dicotyledonous plants like a rose plant.
Angiosperm leaf architecture - Digital Atlas of Ancient Life
2021年9月28日 · Leaves are often described based on their phyllotaxy (arrangement on the stem), whether they are simple or compound, size, major venation pattern (e.g., pinnate or palmate, type of lateral veins), type of margin (edge of the leaf blade), and type of indumentum (type and density of hairs, if present).
Leaf: Its characteristics, functions, types, types of venation
2019年10月18日 · The lamina, or the leaf blade or epipodium is the green expanded part of the leaf with veins and veinlets. There is, usually, a middle prominent vein, which is known as the midrib. Veins provide rigidity to the leaf blade and act as channels of transport for water, minerals and food materials.