anther and filament definition
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filament The stamen of a flower — the part that produces pollen — consists of a slender stalk, called a filament and an anther. The filament supports the anther, which is where pollen develops. The word filament is from the Latin word filum, which means thread.. Filament, in fact, can be a synonym for thread.
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Reproductivestructures Stamens (microsporophylls) are structures that produce pollen in terminal saclike structures (microsporangia) called anthers. The number of stamens comprised by the androecium is sometimes the same as the number of petals, but often the stamens are more numerous or fewer in number than the petals. There are generally two pairs of spore-containing sacs (microsporangia) in a young stamen; during...
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What is a filament?     The filament of a flower is the stalk of the stamen that attaches the anther with the corolla.he filament suspends the anthers, normally slightly above the level of the open petals. This is to improve access to insects and offers the anthers a small bit of flexibility … .
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REPRODUCTIVE STRUCTURE Noun. 1. anther-the part of the stamen that contains pollen; usually borne on a stalk. stamen-the male reproductive organ of a flower. reproductive structure-the parts of a plant involved in its reproduction.
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Filament Solar filament, equivalent to a solar prominence; Birkeland current, a specific magnetic field-aligned current in the Earth’s magnetosphere; In biology. Myofilament, filaments of myofibrils constructed from proteins; Protein filament, a long chain of protein subunits, such as those found in hair, muscle, or in flagella
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- Many tree flowers, such as those of the maple tree, have stamens and pistils, but no sepals or. Claudia E. Mills/Biological Photo Service. Inside the ring of petals are the stamens. Each stamen has a stem, which is called the filament.At the top of the filament is the anther. The pollen grains form in sacs, usually two in number, inside the anther. Finally, inside the ring of stamens is the pistil. It is shaped like a vase, with a neck and oval base.The neck is known as the style.ach stamen has a stem, which is called the filament. At the top of the filament is the anther. The pollen grains form in sacs, usually two in number, inside the anther. Finally, inside the ring of stamens is the pistil. It is shaped like a vase, with a neck and oval base. The neck is known as the style.
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- the pollen-bearing organ of a flower, consisting of the filament and the anther. Cramer figures and describes a stamen occupying the place of a petal in Daucus Carota. Sometimes the stamen has no filament, and the anther is then said to be sessile. Then comes a purple collar made up of stamen heads without any stalks.
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Filament Look up filament, filamentous, or filaments in Wiktionary, the free dictionary. The word filament, which is descended from Latin filum meaning thread, is used in English for a variety of thread-like structures, including:
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- (biology) Capable of moving freely in all directions. 1996, William G. D'Arcy, William G. D'Arcy, Richard C. Keating, editor, The anther: form, function, and phylogeny: The versatile anther is an important step up in flowering plant evolution and it may be the most widespread of all simple anther types.
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SPORE pollen-the fine spores that contain male gametes and that are borne by an anther in a flowering plant. microspore-smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte.
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- Lesson Summary. The stamen is a very important part of the flower because it contains the male reproductive organs. The stamen is comprised of the filament, which is the long, slender stalk, and the anther, which is at the top of the filament and is where pollen grains are produced.elf-pollination is the more simple method, whereby pollen from the anther of a flower is transferred to the pistil of the same flower. The pollen is often transferred by falling from the anther, which is held above the pistil by the filament, down to the top of the pistil.
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Invertebrate muscles: thin and thick filament structure; molecular basis of contraction and its regulation, catch and asynchronous muscle This review covers thin and thick filament structure and the molecular basis of force production and its regulation in invertetebrate muscle, and two properties of invertebrate muscle that arise on the level of the actomyosin, catch and asynchronous activity.
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- Stamens, Filaments and Anthers. Lewis errs in his description of the anthers, suggesting they are 2 horned or forked.. The anthers are versatile, meaning that the point of attachment of the filament is mid-length or centered along the length of the anther. Most anthers are basifixed, meaning that the filament is attached at the base of the anther.
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Microfilament Actin filaments are assembled in two general types of structures: bundles and networks. Bundles can be composed of polar filament arrays, in which all barbed ends point to the same end of the bundle, or non-polar arrays, where the barbed ends point towards both ends.he actin filament network is arranged with the barbed-end of each filament attached to the cell's peripheral membrane by means of clamped-filament elongation motors, the above-mentioned actoclampins, formed from a filament barbed-end and a clamping protein (formins, VASP, Mena, WASP, and N-WASP).
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- pol·len. (pŏl′ən) n. The fine powderlike material whose individual grains contain the male reproductive cells of seed plants. Pollen is produced in the anther in angiosperms and in the male cone in gymnosperms.
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Antheridia An antheridium typically consists of sterile cells and spermatogenous tissue. The sterile cells may form a central support structure or surround the spermatogenous tissue as a protective jacket. The spermatogenous cells give rise to spermatids via mitotic cell division.In bryophytes, the antheridium is borne on an antheridiophore, a stalk-like structure that carries the antheridium at its apex.In many gymnosperms and all angiosperms, the male gametophytes have been reduced to pollen grains and their antheridia have been reduced to a single generative cell within the pollen grain.n bryophytes, the antheridium is borne on an antheridiophore, a stalk-like structure that carries the antheridium at its apex. In many gymnosperms and all angiosperms, the male gametophytes have been reduced to pollen grains and their antheridia have been reduced to a single generative cell within the pollen grain.
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Stamen of a Flower: Definition, Function & Design The female reproductive part is called the pistil and is comprised of the stigma, style, and ovary. The male reproductive part of a flower is referred to as the stamen and consists of the filament and the anther.
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- Filament - In physics and electrical engineering. 1  An electrical filament in an incandescent light bulb. 2  Similarly, a thin heating element. 3  Current filament. 4  Filament propagation, diffractionless propagation of a light beam. 5  3D printing filament, used as raw material for Fused deposition modeling 3D printers.
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- Related forms: filamentous (adjective). Related terms: 1  thick filament. 2  thin filament. 3  sliding filament hypothesis. 4  actin filament. 5  myosin filament. 6  sliding filament model. 7  glial filament. 8  intermediate filament.
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Micro: CH12 - Fungi & Algae - Single filament is known as HYPHA (plural, hyphae) - Collection of hyphae growing in one place is known as MYCELIUM-Hyphae absorb nutrients and releases enzymes which break down material into readily absorbed smaller organic compounds. Single filament is known as HYPHA (plural, hyphae) - Collection of hyphae growing in one place is known as MYCELIUM-Hyphae absorb nutrients and releases enzymes which break down material into readily absorbed smaller organic compounds.
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- There are a few branches of KFC in Israel that are Kosher, however, in general, the rest of the branches in Israel and around the world are not Kosher. There is a Kosher branch of KFC in the Malcha Mall in Jerusalem.
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Definition of Flower Filament Sophie Johnson. The filament of a flower is one of the male reproductive parts of the plant. When a flower opens, the filaments can be seen inside, thrusting up like stems within the flower itself. A filament is topped by the anther. Together the anther and filament make up the flower's stamen.
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stamen Definition of STAMEN for Kids. : the part of a flower that produces pollen and is made up of an anther and a filament. a microsporophyll of a seed plant; specifically: the pollen-producing male organ of a flower that consists of an anther and a filament — see flower illustration. See stamen defined for English-language learners.
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- Female parts found in the carpel. The main structure in the androecium is called the stamen and is the male structures in the flower. The stamen is made of two parts: the filaments and the anthers. The filaments are the slender stalks of the stamen seen here. The anther is the top of the stamen and contains pollen.
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Anther of a Flower: Function & Definition Flowers, like all living organisms, must have a way to reproduce. One of the crucial reproductive structures found in all flowers is the anther. In this lesson, we will explore the structure and function of the anther to gain an understanding of this important part.
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- Dehiscence Of Anther Last Updated on Fri, 09 Jun 2017 | Pollen Grains Pollen is commonly released from the anther through a longitudinal slitlike opening in the anther wall. Other methods also occur. Dehiscence usually results from hygroscopic shrinkage of the anther wall. Change in humidity may cause repeated opening and closing of the pollen chambers. The pollen may be freed all at once or escape gradually. The air dispersal of pollen and spores depends on various factors such as time of the day, variations in temperature and wind speed.