bitegminous

常見例句

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