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The nucellus is usually degraded and absorbed as the endosperm develops.

珠心通常在胚乳发育时被分解和吸收.

辞典例句

Food materials may be stored in a special tissue derived from the nucellus, called the perisperm.

营养物质可以贮藏于由珠心产生的一种特殊组织, 叫外胚乳.

辞典例句

The cells of the integument and nucellus of some plants form perfectly normal embryos.

某些植物的珠被和珠心细胞形成完全正常的胚.

辞典例句

The ovule is bitegminous archesporial cell locates under the nucellus epidermis, which develops into functional megasporocyte.

孢原细胞位于珠心表皮之下, 直接起大孢子母细胞的功能.

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