a, anther; s, pistil; st, style; v, stigmatic surface. Example sentences with the word anther. How to use another in a sentence. The walls of the cells are frequently absorbed, so that when the anther attains maturity the fibres are alone left, and these by their elasticity assist in discharging the pollen. The five anthers are remarkable for the coloured processes which extend beyond the anther cells and form a sort of cone around the style (fig. anther example sentences. Potato haploid induction has significant meaning in potato breeding, It includes parthenogenesis and, 29. Floral diagram of typical orchid flower; 1, labellum; a, anther; s, rudiments of barren stamens (staminodes). The anther entire (a) with its filament; section of anther (b) showing the four loculi. Anther definition is - the part of a stamen that produces and contains pollen and is usually borne on a stalk. That part of the anther to which the filament is attached is the back, the opposite being the face. 9, 2) the style elongates and the forked stigma occupies the same position as the anther in fig. The anther is developed before the filament, and is always sessile in the first instance, and sometimes continues so. c, The one-celled ovary cut a, The anther, con transversely, having three taining pollen parietal placentas. Each cone consists of an axis, on which numerous broad and thin bracts are arranged in regular rows; in the axil of each bract occurs a single flower; a male flower is enclosed by two opposite pairs of leaves, forming a perianth surrounding a central sterile ovule encircled by a ring of stamens united below, but free distally as short filaments, each of which terminates in a trilocular anther. The plants produce bisexual flowers and, unlike Sagittaria, have, 24. The filament is usually of sufficient solidity to support the anther in an erect position; but sometimes, as in grasses, and other wind-pollinated flowers, it is very delicate and hair-like, so that the anther is pendulous (fig. Recent Examples on the Web This transfers pollen from the male reproductive organs, called anthers, to the pistils, where pollination commences. 25 f), and a broader portion, usually of two lobes, termed the anther (a), containing the powdery pollen (p), and supported upon the end of the filament. Sometimes the anther has a single cavity, and becomes unilocular, or monothecal, or dimidiate, either by the disappearance of the partition between the two lobes, or by the abortion of one of its lobes, as in Styphelia laeta and Althaea officinalis (hollyhock). Thus in Dicentra and Corydalis there are six stamens in two bundles; the central one of each bundle alone is perfect, the lateral ones have each only half an anther, and are really stipules formed from the staminal leaf. In Orchidaceae the stigma is situated on the anterior surface of the column beneath the anther. They grow flowers, but the male anthers are stunted or withered: Seed but no poll 5. another example sentences. The division between the lobes is marked on the face of the anther by a groove or furrow, and there is usually on the face a suture, indicating the line of dehiscence. Copyright © 2016 sentencedict.com All Rights Reserved Contact.
The movements of the pollen-masses may readily be seen with the naked eye by thrusting the point of a needle into the base of the anther, when the disks adhere to the needle as they would do to the antenna of an insect, and may be withdrawn.
anther definition: 1. the part of a flower that contains pollen 2. the part of a flower that contains pollen. Anther parallel to this is a plan mooted for young men, whereby they may learn woodwork and metalwork skills and thereby sustain themselves. There is a double covering of the anther - the outer, or exothecium, resembles the epidermis,and often presents stomata and projections of different kinds (fig. The Monandreae have been subdivided into twenty-eight tribes, the characters of which are based on the structure of the anther and pollinia, the nature of the inflorescence, whether terminal or lateral, the vernation of the leaf and the presence or absence of a joint between blade and sheath, and the nature of the stem. Each stamen generally bears four pollen-sacs (microsporangia) which are associated to form the anther, and carried up on a stalk or filament. 2. Protogyny in M. grandiflora lies in a mechanism that determines the, 26. The male parts of the flower are the stamens and the, 21. anther s but the shorter females are green. Under the microscope, an anther can be seen to have many spherical to ellipsoidal pollen grains on its surface.
Sentencedict.com try its best to collect and build good sentences. In such cases the contact of an insect or other body with those processes is sufficient to liberate the pollen often with elastic force, even when the anther itself is not touched. At the centre of each flower, the styles are a vivid orange, held well above the three golden yellow, 23. He said well son (I was two years younger but every one was son to him) he looks a little bettern me,. Many plants produce, in addition to ordinary open flowers, so-called cleistogamous flowers, which remain permanently closed but which notwithstanding produce fruit; in these the corolla is inconspicuous or absent and the pollen grows from the anther on to the stigma of the same flower. The haploid breeding of maize is a technology that using, 27.
They are attracted to the flower by its colour or its perfume; they seek, collect or feed on its honey, and while so doing they remove the pollen from the anther and convey it to another flower, there to germinate on the stigma when its tubes travel down the style to the ovary where their contents ultimately fuse with the "oosphere" or immature egg, which becomes in consequence fertilized, and forms a seed which afterwards develops into a new plant (see article Angiosperms).
(For further details on the form and arrangement of the flower and its parts, see Flower.) These flowers possess spring-loaded anthers that give honey bees a rough blow when they enter.
When the pollen-grains are ripe, the anther dehisces and the pollen is shed. anther of a stamen to the stigma of a pistil. Examples of anther in a Sentence. - Stamen of Asclepias, showing filament f, anther a, and appendages p. Enlarged. - Answered - The part of a flower’s Stamen that contains Pollen. - Stamen, consisting of a filament (stalk) f and an anther a, containing the pollen p, which is discharged through slits in the two lobes of the anther. Occasionally there are numerous cavities in the anther, as in Viscum and Rafesia. Each has a small calyx in the form of a shallow rim, sometimes five-lobed or toothed; five petals, which cohere by their tips and form a cap or hood, which is pushed off when the stamens are ripe; and five free stamens, placed opposite the petals and springing from a fleshy ring or disk surrounding the ovary; each bears a twocelled anther. 3, The same, when disturbed by the entrance of the proboscis of the bee in the direction of the arrow; f, filament; c, connective; s, the obstructing half of the anther.
How to use anther in a sentence. Then the walls of the mother-cells are absorbed, and the pollengrains float freely in the fluid of the pollen-sacs, which gradually disappears, and the mature grains form a powdery mass within the anther. Sentence with the word anther. Last week's winner of the bragging rights can again brag for, The stigmas were then pollinated with pollen from a flower whose, This indicates that similar mechanisms may trigger, In maize, the stomium is located at the meeting point of the two loculi that make up each half, Asexual embryogenesis and plantlet development in, Owing to the gradual dehiscence of the thecae, at any time, syrphids could only access part of the pollen of each, Florets were removed from the middle third of the main rachis on fully emerged tassels prior to, In the experiments in Table 1, pricking of an, The distal end bears nine very short filaments, each terminating in a bilobed, Pollen, in monads or tetrads, is presented in the anthers, adhering to the, Lacking an extensive vacuolization phase, meiocytes of the same tetrads stay together until the, The fusion of the corolla lobes to a sympetalous corolla is late taking place by meristem incorporation and fusion across the backs of the, Large fields of green grassland can be seen, one after, The tapetum degenerates earlier than usual, resulting in high pollen sterility, and, Both species landed directly on the column but, while one scraped its abdomen against the anthers, the other introduced its glossa into the, When the promoter fragment was resolved into smaller portions, further elements could be identified that conferred root, pulvinus and, While leaving the flower, it pulls the pollinium out of the, The single cell layer of tapetum surrounding the, However, the species Eulophia foliosa has adaptation in the cap, Moggridge figures a flower of Ophrys insectifera in which the rostellate process was replaced by an, By pollination we mean the transfer of pollen from an, They consist usually of two parts, the Filament and, The ovule is a part of every ovary just as the pollen is a part of every, Sometimes the stamen has no filament, and the, In this flower the stigmatic surface is above the, Zhangjiajie also boasts another all-glass bridge that suspends 180 meters above, One of the organs of a flower, consisting of a filament and, Its body must be sufficiently large to come in contact with the, The portion of a stamen which connects the two cells of the, I suppose you were afraid I was going to give you. - Portion of wall of anther of Wallflower (Cheiranthus). Even in homogamous flowers cross-pollination is in a large proportion of cases the effective method, at any rate at first, owing to the relative position of anther and stigma or the fact that the plant is self-sterile. Example sentences with the word another.
With shouting, the Eridanus girl jumps to, 16. anther tubes have a collection of pollen grains at their tip. .he took a pull on his ber and said "but damn sure he gonna think twice about winnin anther fight with me".. This column stands up from the base of the flower, almost at right angles to the lip, and it bears at the top an anther, in the two hollow lobes of which are concealed the two pollen-masses, each with its caudicle terminating below in a roundish gland, concealed at first in the pouch-like rostellum at the front of the column. All Rights Reserved. anther s. Flowers develop into cylindrical capsule s 15mm long, which contain many small flattened seeds. What is an anther? Anther popular option is cantaloupe or honeydew wedges wrapped with prosciutto. In the young state there are usually four pollen-sacs, two for each anther-lobe, and when these remain permanently complete it is a quadrilocular or tetrathecal anther (fig. When the anther lobes are rendered horizontal by the enlargement of the connective, then what is really longitudinal dehiscence may appear to be transverse.
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