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Noun:
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central part of a plant ovule; contains the embryo sac
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用作名詞 (n.)
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The nucellus is usually degraded and absorbed as the endosperm develops.
珠心平常在胚乳發肓時被拆分和汲取。
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The region of an ovule that is opposite the micropyle,where the integuments and nucellus are joined.
合點珠孔對方的胚珠內融合珠被和珠心的同一個部分。
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之內內部全權設計，受學術版權保護英文，圖片侵權必究
海詞漢語詞典，十二年國產品牌
美
[nu?'sel?s]