单词 | pollen cell |
释义 | pollen celln.ΚΠ 1834 J. Lindley in Rep. Brit. Assoc. Advancem. Sci. 1833 44 You may observe on each side of the medial line of a transverse section of a lobe of an anther, a collection of cellules rather larger than the remainder:..it is here that the pollen is engendered; such cells are therefore called pollen-cells. 1839 J. Lindley Introd. Bot. (ed. 3) i. ii. 183 The pollen-cells had become larger; their granules were so much multiplied that they were grouped and packed in opaque masses. 1879 Amer. Naturalist 13 4 The end of the style with its hairs forms the bottom of the pollen-cell. 2. Botany. A pollen grain; a cell which develops into a pollen grain, or which forms part of an aggregation of pollen grains. ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [noun] > cell > types of > other types bast cell1842 basal cell1846 pollen cell1857 companion cell1859 segment1862 pollen mother cell?1870 sextant1875 transfusion cell1875 idioblast1882 trichoblast1882 symplast1894 megasporocyte1924 oat cell1940 heterokaryon1945 1857 A. Henfrey Elem. Course Bot. §928 Compound pollen-grains, consisting of a number of pollen-cells permanently coherent. 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 440 The four young pollen-cells are now freed by the rapid absorption of the cell-wall which surrounds and separates them. 1904 Bot. Gaz. 38 208 In examining so many pollen cells it was not surprising that a good many abnormal forms were met with. 1998 Science 24 July 503/2 A preliminary search for mutant pollen cells that don't adhere properly suggests that structural defect in the cell wall ruin the attraction. 3. Bee-keeping. A cell in a honeycomb in which pollen is stored. More fully pollen storage cell. rare. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > order Hymenoptera > [noun] > suborder Apocrita, Petiolata, or Heterophaga > group Aculeata (stinging) > superfamily Apoidea (bees) > honeycomb > cell in cella1398 room1579 cabin1611 working hole1735 pollen cell1888 1888 Chambers's Encycl. II. 22/2 A pollen-cell is (frequently at least) sealed with honey, and over this a thin cream-like pellicle is formed. 1954 C. G. Butler World of Honeybee pl. 35. (caption) Worker bees on pollen storage cells. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.1834 |
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