basal leaves definition
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Basal Leaf Marie Iannotti. Definition: A basal leaf is one that grows from the lowest part of the stem. Basal, in general, refers to the base of a structure. Many perennial plants are trimmed back to new basal foliage once the older foliage starts to look tired and worn.
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- Definition of leaf fall. 1 : the natural separation and dropping of the leaf at the end of the growing season and over a short period in deciduous plants or intermittently throughout the year in coniferous trees — compare abscission. 2 : fallen leaves on the forest floor.
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- This is folding of the leaves creates what is called a psuedostem, or a false stem. A psuedostem refers to basal leaves in grasses which several leaf sheaths are layered in a concentric arrangement which give them the apperance of a stem. The leaves are V-shaped with a boat-shaped tip, and can grow up to 50 cm long.
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- Compound Leaf A leaf that is made up of 2 or more leaflets on the same petiole. Coniferous Any cone bearing tree species. Usually trees with needles. Deciduous Refers to trees that drop their leaves (broad leaf or needles).
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- Fern Prothallium. Fern is a common name for the cryptogamous (spore-producing) plants belonging to the division Filicophyta, also called Filicinophyta or Pterophyta, of seedless vascular plants. They are primitive vascular plants with true roots, stems, and complex leaves.
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Frond Unfurling fiddlehead fern frond. A frond is a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group. Other botanists allow the term frond to also apply to the large leaves of cycads and palms (Arecaceae).
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Bud A terminal bud occurs on the end of a stem and lateral buds are found on the side. A head of cabbage (see Brassica) is an exceptionally large terminal bud, while Brussels sprouts are large lateral buds. Since buds are formed in the axils of leaves, their distribution on the stem is the same as that of leaves.There are alternate, opposite, and whorled buds, as well as the terminal bud at the tip of the stem. In many plants buds appear in unexpected places: these are known as adventitious buds.ince buds are formed in the axils of leaves, their distribution on the stem is the same as that of leaves. There are alternate, opposite, and whorled buds, as well as the terminal bud at the tip of the stem. In many plants buds appear in unexpected places: these are known as adventitious buds.
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cambium play \-bē-ə\. : a thin formative layer between the xylem and phloem of most vascular plants that gives rise to new cells and is responsible for secondary growth.
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basal Something that's basal forms the base or the bottom layer of an object. The basal leaves on a plant are connected to the lowest section of its stem. In medicine, the word basal describes structures that are located at the base of some major organ or other body part. Basal ganglia, for example, are found at the base of the brain in humans, and a basal cell is at the deepest part of the skin.
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Leaf A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Foliage is a mass noun that refers to leaves collectively. Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis.
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lateral root secondary root. the branches that develop from deep inside the plant root (i.e. are ENDOGENOUS) where cells of the PERICYCLE become meristematic (see MERISTEM and produce a growing point which differentiates into mature tissues. Such branching occurs behind the root hair zone and is initiated by AUXIN.
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The Skin The stratum basale, also called the stratum germinativum, is the basal (base) layer of the epidermis. It is the layer that’s closest to the blood supply lying underneath the epidermis. This layer is one of the most important layers of our skin.
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Translations for basal ganglia Freebase(0.00 / 0 votes)Rate this definition: The basal ganglia are a group of nuclei of varied origin in the brains of vertebrates that act as a cohesive functional unit. They are situated at the base of the forebrain and are strongly connected with the cerebral cortex, thalamus and other brain areas.
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- stipule: one of (usually) a pair of early-developing appendages at the bases of leaves in many broad-leaved angiosperms, the term not used for monocot leaves, c.f. cross-zone, hyperphyll, hypophyll, lamina, leaf base, ligule, petiole, and Vorlaeuferspitze, vorläuferspitze see, interpetiolar, intrapetiolar. sheathing
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Leaf A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Leaves are collectively referred to as foliage, as in autumn foliage.. Diagram of a simple leaf.
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Leaf A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem. The leaves and stem together form the shoot. Foliage is a mass noun that refers to leaves collectively. Typically a leaf is a thin, dorsiventrally flattened organ, borne above ground and specialized for photosynthesis.Most leaves have distinctive upper (adaxial) and lower (abaxial) surfaces that differ in colour, hairiness, the number of stomata (pores that intake and output gases) and other features.xternal leaf characteristics, such as shape, margin, hairs, the petiole, and the presence of stipules, are important for identifying plant species, and botanists have developed a rich terminology for describing leaf characteristics. Leaves have determinate growth.
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leaf An appendage growing from the stem of a plant. Leaves are extremely variable in form and function according to species. For example, the needles of pine trees, the spines of cacti, and the bright red parts of the poinsettia plant are all leaves modified for different purposes.
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- The basal leaves in some species remain persistent through flowering, while in others the basal leaves are shed before flowering.
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leaf Most often the leaf consists of a broad, flat blade, or lamina, in which all basic physiological processes occur, and a leafstalk, or petiole, which attaches the blade to the stem. The petiole enables the leaf to occupy a definite position in relation to the light.
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LEAF TYPES A pinnate leaf is a compound leaf that attaches to the stem and is divided into smaller leaflets. A pinnate leaf can either be even or odd, which is the amount of leaflets contained on the leaf. As you can see, both the drawing and picture are odd pinnate leaves because they have an odd amount of leaflets.
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Translations for basal ganglia Editors Contribution(0.00 / 0 votes)Rate this definition: basal ganglia. Are a group of nuclei of varied origin in the brains of vertebrates that act as a functional unit and are situated at the base of the forebrain.
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Basal  Angiosperms Basal Angiosperms often show combinations of the following traits: numerous flattened (laminar) stamens with wide filaments; numerous tepals; many separate carpels; aromatic oils (giving them a primative odor); and alternate, spirally arranged leaves.nteresting stuff: Lauraceae are one of the largest basal angiosperm families and are common in tropical forests. One genus, Cassytha, is parasitic and viney, strongly resembling members of the genus Cuscuta (Convolvulaceae: in Asterids) in a striking case of convergent evolution.
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Sessility (botany) Sessility (botany) The perennial wildflower Trillium cernuum possesses three leaves that are sessile at the top of the stem. In botany, sessility (meaning sitting, used in the sense of resting on the surface) is a characteristic of plant parts which have no stalk. Flowers or leaves are borne directly from the stem or peduncle, and thus lack a petiole or pedicel. The leaves of the vast majority of monocotyledons lack petioles. In addition to these plants, many insects practise sessile nesting practices. For example, Brachygastra scutellaris will build its nest starting with a sessile initiation onto a tree upon which the primary comb is built.
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Definition of 'leaf' Definition of 'leaf'. leaf (liːf ) The leaves of a tree or plant are the parts that are flat, thin, and usually green. Many trees and plants lose their leaves in the winter and grow new leaves in the spring. In the garden, the leaves of the horse chestnut had already fallen. The Japanese maple that stands across the drive had just come into leaf.
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Glossary of plant morphology In botany, leaf shape is a description of the form of the part of a plant known as the leaf. It is characterised with the following terms (with botanical Latin in italics in brackets) to describe the shape of leaves 1  : Acicular (acicularis): Slender and pointed, needle-like.2  Acuminate (acuminata): Tapering to a long point.n botany, leaf shape is a description of the form of the part of a plant known as the leaf. It is characterised with the following terms (with botanical Latin in italics in brackets) to describe the shape of leaves 1  : Acicular (acicularis): Slender and pointed, needle-like.
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- Modified leaves Floral leaves (bracts) - brightly colored leaves that surround flowers and add to ability to attract pollinators-e.g. Poinsettias, flowering dogwoodSpines-reduce water loss and protect against predators-e.g. cactusReproductive leaves-leaves that form new plantlets and allow forasexual reproduction-e.g.