bitegminous

常見(jiàn)例句

• The ovule is bitegminous and tenuinucellate.The archesporial cell locates under the nucellus epidermis, which develops into fuctional megasporocyte.
  孢原細(xì)胞位於珠心表皮之下，直接起大孢子母細(xì)胞的功能。
• The ovule is bitegminous, crassinucellate and anatropous.The megaspore mother cell divides into linear megaspore terad after meiosis.
  大孢子母細(xì)胞減數(shù)分裂形成線形排列的4個(gè)大孢子，郃點(diǎn)耑大孢子具功能。
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