常見例句On the origin of Monocotyledonae from comparative studies of the chemical constituents. 從植物化學(xué)成份的比較看單子葉植物的起源問題.Angiosperms are divided into two major classes, the monocotyledons (MONOCOTYLEDONAE) and dicotyledons (DICOTYLEDONAE), with a small basal group known as primitive dicotyledons. 被子植物可以劃分爲(wèi)兩個(gè)綱,單子葉植物綱和雙子葉植物綱。Compare Monocotyledonae. 比較Monocotyledonae。 返回 Monocotyledonae