The veins in a leaf represent the vascular structure of the organ, extending into the leaf via the The vein or veins entering the leaf from the petiole are called primary or first order veins.
Top Answer. Leaves can have many different shapes, sizes, and textures. Further classification was then made on the basis of secondary veins, with 12 further types, such as; Black walnut leaves, rose bush leaves, and the Ohio Buckeye tree's leaves… A compound leaf is one whose blade has two or more sub-units called leaflets attached to the same stalk or petiole. Many leaves are covered in trichomes (small hairs) which have diverse structures and functions. The branch that contains the leaflets is called a rachis.These leaves contain leaflets arranged in opposite arrangement on the rachis (the extended petiole). Considerable changes in leaf type occur within species, too, for example as a plant matures; as a case in point Correspondingly, leaves represent heavy investment on the part of the plants bearing them, and their retention or disposition are the subject of elaborate strategies for dealing with pest pressures, seasonal conditions, and protective measures such as the growth of thorns and the production of In contrast, many other non-seasonal plants, such as palms and conifers, retain their leaves for long periods; External leaf characteristics, such as shape, margin, hairs, the petiole, and the presence of stipules and glands, are frequently important for identifying plants to family, genus or The type of leaf is usually characteristic of a species (monomorphic), although some species produce more than one type of leaf (dimorphic or Where leaves are basal, and lie on the ground, they are referred to as Different terms are usually used to describe the arrangement of leaves on the stem (Two basic forms of leaves can be described considering the way the blade (lamina) is divided. By comparing the typical examples of the plants and trees like Mango, Guava and Rose, Coriander, we will able to differentiate the simple, and the compound leaves easily.As in simple leaves, there is only single leaf blade and incision, which are so light that does not divide the leaf blade, but in compound leaves the incision is so deep that the leaf blades are divided … Examples of plants with this type of leaves include: rose leaves, hickory leaves, pecan, ash or walnut tree leaves. The broad, flat leaves with complex Leaves are the most important organs of most vascular plants.Typically leaves are broad, flat and thin (dorsiventrally flattened), thereby maximising the surface area directly exposed to light and enabling the light to penetrate the Many gymnosperms have thin needle-like or scale-like leaves that can be advantageous in cold climates with frequent snow and frost.The internal organization of most kinds of leaves has evolved to maximize exposure of the photosynthetic The shape and structure of leaves vary considerably from species to species of plant, depending largely on their adaptation to climate and available light, but also to other factors such as grazing animals (such as deer), available nutrients, and ecological competition from other plants. Simpson,These complex systems are not used much in morphological descriptions of taxa, but have usefulness in plant identification, The xylem typically lies on the adaxial side of the vascular bundle and the phloem typically lies on the abaxial side. 2013-04-26 04:49:01 2013-04-26 04:49:01. There are also many other descriptive terms, often with very specialized usage and confined to specific taxonomic groups.
Classification of trees with these types of leaves can further be defined by whether the leaves and leaflets all start from the same point, which can help in identifying the specific genus of a tree based on its leaves, bark, and seeds. Leaves are normally extensively vascularized and typically have networks of vascular bundles containing xylem, which supplies water for photosynthesis, and phloem, which transports the sugars produced by photosynthesis.