双子叶植物根及根茎断面可见一圈环纹为A．形成层B．内皮层C．木质部D．外皮层E．石细胞环带A1型题

作者: rantiku 人气: - 评论: 0

问题双子叶植物根及根茎断面可见一圈环纹为

选项 A．形成层 B．内皮层 C．木质部 D．外皮层 E．石细胞环带 A1型题

答案 A

解析

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