The diameter of later xylem vessel of the seminal root and first pair of primary roots were greater than these of second and third pairs.
2．种子根和第一对主根的后生导管直径大于第二对、第三对主根。
参考来源 - 小麦苗期根的分枝规律与解剖结构·2,447,543篇论文数据，部分数据来源于NoteExpress
医生把胡萝卜的种子和根入药，是基于“良药苦口”这个理论的。
Doctors used carrot seeds and roots as medicine, on the theory that foods that taste bad must be good for you.
芽的顶端分生组织与随后产生的根的分生组织共同构成胚状结构，与单子叶植物种子胚相似。
Embryo like structure was found being formed from shoot meristem and root meristem and it was similar with radicle and plumule of the embryo.
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