速英语 / “珠孔”造句

“珠孔”造句

2024年07月02日 08:47:44
4个胚珠同时分泌授粉滴,花粉掉落后被授粉滴带进珠孔.
Pollination drops were exuded from 4 ovules at one time.

开花当天助细胞珠孔端的丝状器中聚集了大量的钙颗粒.
Near anthesis, synergids formed filiform apparatus in which abundant calcium precipitates accumulated pollen tubes entering.

直生的直立生长以至珠孔在茎的另一端的. 用于形容胚珠.
Growing straight , so that the micropyle is at the end opposite the stalk. Used an ovule.

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