spore mother-cell

常见例句

雙語例句

• The ovary contains 20-23 ovules. The ovules are hemitropous, with 2 integuments, tenuinucellate and the archesporial cell functions directly as the mega-spore mother cell.
  子房具胚珠20—23枚，胚珠橫生，珠被二層，薄珠心，孢原細胞直接起大孢子母細胞作用。
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