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A higher magnification and more detailed view of bulrush (Scirpus sp.) aerial stem. Note the similarity of the vascular bundles to Zea mays, another monocot. Identify the strand of fibers

and each of the tissues within the vascular bundles.

Structure of cross-sectioned stem in Bambusa Dispersed vascular bundles Cross section of bamboo (Bambusa sp.) stem showing dispersed vascular bundles embedded in ground parenchyma. Identify the sclerenchymatous bundle sheath, phloem and xylem.



2013年生物竞赛试题(附答案)_学科竞赛_高中教育_教育...Ⅰ卷 单选题 (70′)一.基础题 (1′× 10 =10...死亡,这是因为剥皮后植物失去下列哪一个结构的...

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