amphitropous ovule

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• amphitropous ovule相关词

英汉例句

• The ovule is unitegmic,tenuinucellate and anatropous.
  薄珠心，单珠被，倒生胚珠，蓼型胚囊。
• Frequently the basal ovule, which is the last one to be fertilized would abort.
  最后受精的基生胚珠经常败育。

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