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The glycocalyx (pl.: glycocalyces or glycocalyxes), also known as the pericellular matrix and cell coat, is a layer of glycoproteins and glycolipids which surround the cell membranes of bacteria, epithelial cells, and other cells. [1] Animal epithelial cells have a fuzz-like coating on the external surface of their plasma membranes.
Either a minor calyx in the kidney, a conglomeration of two or three minor calyces to form a major calyx, or the Calyx of Held, a particularly large synapse in the mammalian auditory central nervous system, named by H. Held in his 1893 article Die centrale Gehörleitung, [3] due to its flower-petal-like shape.
A mature flower. In this example, the perianth is separated into a calyx (sepals) and corolla (petals) The perianth (perigonium, perigon or perigone in monocots) is the non-reproductive part of the flower, and structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals) or tepals when called a perigone.
Calyx (anatomy), collective name for several cup-like structures in animal anatomy; Calyx (botany), the collective name for the sepals of a flower; Calyce, a genus of beetles; Calyx, a genus of sea sponges; Calyx of Held, a large synapse in the auditory brainstem structure; Eubela calyx, species of sea snail
Some plants retain a thorny calyx, either dried or live, as protection for the fruit or seeds. Examples include species of Acaena, some of the Solanaceae (for example the Tomatillo, Physalis philadelphica), and the water caltrop, Trapa natans. In some species, the calyx not only persists after flowering but instead of withering, begins to grow ...
The pappus-clad fruits that make up the familiar "dandelion clock" being dispersed by the wind (family Asteraceae) Bidens frondosa achenes with barbed pappusIn Asteraceae, the pappus is the modified calyx, [1] the part of an individual floret, that surrounds the base of the corolla tube in flower.
Many asteraceous plants have bracts at the base of each inflorescence. [6] The term involucre is also used for a highly conspicuous bract or bract pair at the base of an inflorescence. In the family Betulaceae, notably in the genera Carpinus and Corylus, the involucre is a leafy structure that protects the developing nuts.
Diagram of flower parts. In botany, floral morphology is the study of the diversity of forms and structures presented by the flower, which, by definition, is a branch of limited growth that bears the modified leaves responsible for reproduction and protection of the gametes, called floral pieces.