| 单词 | chalaza |
| 例句 | We’ll leave that up to you, but we recommend that you first eliminate the egg’s chalaza, or the stringy bit that gunks up an efficient pastry brush. Small, savory pies make handy meals A pair of fibrous strands called chalazae anchor the yolk inside the egg, and Geary figured that sundering them would allow the yolk to float to the center. Cook’s Illustrated’s Christopher Kimball Believes Cooking Is Ultraserious Business 2012-10-14T16:30:31Z Having the ovule inverted at an early period in its development, so that the chalaza is as the apparent apex; Ð opposed to orthotropous. Webster's Unabridged Dictionary 2012-03-24T02:00:23.513Z The hilum or base of the seed, and the chalaza or base of the nucellus are united by means of the raphe r. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The adnate portion of the funiculus, which appears as a ridge or cord extending from the hilum to the chalaza, and which distinguishes this kind of ovule, is called the Rhaphe. The Elements of Botany For Beginners and For Schools The pollen-tube does not penetrate the ovule through the micropyle but enters at the opposite end—the chalaza. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" Seeds medium in size, broad, beak short; chalaza oval or roundish, elevated, very distinct; raphe a distinct, cord-like ridge. Manual of American Grape-Growing He considers the centre of the hilum as the base, and the chalaza, where it exists, as the natural apex of the seed. Narrative of a Survey of the Intertropical and Western Coasts of Australia Performed between the years 1818 and 1822 — Volume 2 The base of the nucellus is indicated by the chalaza ch, while the apex is at the micropyle m. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Rhaphe, the line or ridge which runs from the hilum to the chalaza in anatropous and amphitropous seeds. The Elements of Botany For Beginners and For Schools I have been thinking that the apparent opening at the chalaza end must have been withering or perhaps gnawing by some very minute insects, as the ovarium is open at the upper end. More Letters of Charles Darwin — Volume 2 Seeds few, small, short, plump, oval or roundish, with short beak; chalaza oval or roundish, distinct; raphe narrow, slightly distinct to indistinct. Manual of American Grape-Growing The chalaza is at the insertion or base, the foramen or orifice is at the apex. The Elements of Botany For Beginners and For Schools Hence, by ascertaining the position of the micropyle and chalaza, the two extremities of the embryo can in general be discovered. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The same, cut through lengthwise: a, the hilum; c, chalaza; d, outer seed coat; e, inner seed-coat; f, the albumen; g, the minute embryo. The Elements of Botany For Beginners and For Schools Campylotropous or Incurved, in which, by the greater growth of one side, the ovule curves into a kidney-shaped outline, so bringing the orifice down close to the base or chalaza; as in Fig. The Elements of Botany For Beginners and For Schools Seeds small, plump, broadly oval, very short beak; chalaza oval, raised, distinct; raphe distinct, showing as a cord-like ridge. Manual of American Grape-Growing Therefore in this case the attachment of the funiculus or stalk is about the middle, the chalaza is at one end, the orifice at the other. The Elements of Botany For Beginners and For Schools The radicular extremity points towards the micropyle, while the cotyledonary extremity is pointed towards the base of the ovule or the chalaza. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Orthotropous ovule of Buckwheat: c, hilum and chalaza; f, orifice. The Elements of Botany For Beginners and For Schools The line or ridge which runs from the hilum to the chalaza. Manual of American Grape-Growing Seeds two to three, of medium size, plump, smooth, not notched; chalaza oval, distinct; raphe a distinct cord-like ridge. Manual of American Grape-Growing The shape and color of seed offer distinguishing marks, while the size, shape and position of the raphe and chalaza furnish very certain marks of distinction in some species. Manual of American Grape-Growing It has been already stated that the radicle of the embryo is directed to the micropyle, and the cotyledons to the chalaza. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Campylotropous ovule of a Chickweed: c, hilum and chalaza; f, orifice. The Elements of Botany For Beginners and For Schools Seeds flattened, shallowly and broadly notched; beak very short; chalaza narrow, slightly depressed with radiating ridges and furrows; raphe a narrow groove. Manual of American Grape-Growing Seeds two to four, large, distinctly notched, beak short; chalaza oval in shape, indistinct, showing as a depression; raphe, a groove. Manual of American Grape-Growing Seeds usually three or four, large, short, plump, blunt, notched; chalaza oval, depressed, indistinct; raphe a broad groove. Manual of American Grape-Growing Seeds small, not notched; beak short, blunt; raphe distinct to indistinct, usually showing as a narrow groove; chalaza pear-shaped, sometimes distinct, but usually a depression only. Manual of American Grape-Growing Amphitropous ovule of Mallow: f, orifice; h, hilum; r, rhaphe; c, chalaza. The Elements of Botany For Beginners and For Schools Seeds two to four, small, notched, short, plump, with very short beak; chalaza narrowly oval, depressed, indistinct; raphe usually a groove, sometimes distinct. Manual of American Grape-Growing Seeds variable in size and shape, usually notched at upper end and characterized always by a bottle-necked, elongated beak; chalaza broad, usually rough, distinct; raphe indistinct. Manual of American Grape-Growing |
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