单子叶植物根及根茎类药材断面可见的环纹是A:纤维群B:木质部C:石细胞层D:内皮层E:形成层

作者: rantiku 人气: - 评论: 0

问题单子叶植物根及根茎类药材断面可见的环纹是

选项 A:纤维群 B:木质部 C:石细胞层 D:内皮层 E:形成层

答案 D

解析

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