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)胞位于珠心表皮之下，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，合點(diǎn)端大孢子具功能。