bitegminous

常见例句

The ovule is bitegminous and tenuinucellate.The archesporial cell locates under the nucellus epidermis, which develops into fuctional megasporocyte.
孢原细胞位于珠心表皮之下，直接起大孢子母细胞的功能。
The ovule is bitegminous, crassinucellate and anatropous.The megaspore mother cell divides into linear megaspore terad after meiosis.
大孢子母细胞减数分裂形成线形排列的4个大孢子，合点端大孢子具功能。