| 单词 | nucellus |
| 释义 | nucellus (once / 787955 pages) n WORD FAMILY nucellus USAGE EXAMPLESAn ovule consists of a conical nucellus surrounded by a single integument. Various, Encyclopaedia Britannica, 11th Edit...(2011) The embryo-sac enlarges greatly, displacing gradually the surrounding nucellus, which eventually forms merely a thin layer around the sac, or completely disappears. Various, Encyclopaedia Britannica, 11th Edit...(2011) There are thus two integuments to the nucellus, an outer and an inner. Various, Encyclopaedia Britannica, 11th Edit...(2011) n central part of a plant ovule; contains the embryo sac Hyper plant part, plant structure any part of a plant or fungus |
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