专业释义英英释义
chalaza [ kə'leizə ]
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n.
- basal part of a plant ovule opposite the micropyle; where integument and nucellus are joined
- one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell
以上来源于: WordNet
柯林斯英汉双解大词典
chalaza /kəˈleɪzə/
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1.
N one of a pair of spiral threads of albumen holding the yolk of a bird's egg in position 卵黄系带
双语例句
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With the embryo development, most of the endosperm degenerated, and the cells near chalaza entered the chalaza, digested it and further nourished the embryo.
合点端的胚乳细胞则侵入合点珠心组织，为胚进一步发育提供营养。
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When ovule orientation is orthotropous the chalaza corresponds to the point where the funicle is attached but in anatropous and campylotropous ovules the chalaza is some distance from the funicle .
当胚珠的方向是直生胚珠时，合点和珠柄连成一条直线，当胚珠是倒生胚珠或弯生胚珠时，合点和珠柄之间有一定的距离。
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