| 单词 | perisperm |
| 释义 | perisperm (once / 844237 pages) n WORD FAMILY perisperm USAGE EXAMPLESThe covering of the seed is marked i. n is the nucellus or perisperm, enclosing the embryo-sac es, in which the endosperm is formed. Various, Encyclopaedia Britannica, 11th Edit...(2011) Perisperm, a name for the albumen of a seed. Gray, Asa, The Elements of Botany—For Beginner...(2010) G, section of an unripe seed. em. embryo. p, perisperm, × 2. Campbell, Douglas Houghton, Elements of Structural and Systemat...(2010) n the nutritive tissue outside the sac containing the embryo in some seeds Hyper plant tissue the tissue of a plant |
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