| 单词 | pollen sac |
| 释义 | > as lemmaspollen sac pollen sac n. Botany each of the chambers (in angiosperms usually four in each anther) in which pollen is formed; the microsporangium of a seed plant. ΘΚΠ the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [noun] > parts of > stamen or pistil > pollen and related parts sandarac1623 globulet1671 powder1672 bread1682 farina1721 pollen1723 father-dust1728 rough wax1744 yellow rain1755 dust1776 fovilla1793 anther dust1797 pollen mass1828 pollen tube1830 intextine1835 pollen grain1835 pollen granule1835 exine1839 exintine1839 intine1839 pollinium1849 sulphur shower1854 pollinic mass1857 pollen chamber1863 smoke1868 pollen sac1872 pollinarium1881 sulphur rain1882 pollinic chamber1885 perine1895 pollen content1926 sculpturing1943 monad1947 nexine1948 sexine1948 1872 Amer. Naturalist 6 105 If we climb into a tree just as the pollen sacs are bursting, our clothes are as yellow as if turned out of a mustard bag. 1914 F. E. Fritsch & E. J. Salisbury Introd. Study Plants xix. 241 If we cut a cross-section of a young stamen..examination with a lens will show two pairs of cavities or pollen-sacs. 1992 M. Ingrouille Diversity & Evol. Land Plants 115 In most gymnosperms the pollen sacs (microsporangia) are grouped together on the abaxial surface of special scale leaves called microsporophylls. < as lemmas |
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