The vascular plants may be grouped into a single division , the tracheophyta 具维管组织的植物在分类学上都归属为一个单独的维管植物门。
Study on the tissue structure changes of the seminiferous tubules in the testis of the rat with aging 大鼠生精小管组织结构增龄变化的研究
Procambium ( procambial strand ) the layer of cells that gives rise to the vascular tissue 原形成层(原形成层束) :形成维管组织的一层细胞。
Primary vascular tissue , which is found in all vascular plants , is formed from the procambium 初生维管组织由原形成层发育而来,在所有维管植物中都有存在。
The microtubule organization center mtoc and the construction of microtubule system in euglena gracilis 小眼虫euglena gracilis中微管组织中心与微管体系的构建
Continuous wound vascular bridges connecting both partners across the graft union were found 7 days after grafting 嫁接后7d ,在嫁接面处形成贯通接穗和砧木的维管组织桥。
Secondary vascular tissue , found only in plants with secondary thickening , develops from the vascular cambium 次生维管组织由维管形成层发育而来,仅存在于有次生加厚的植物中。
The arrangement of vascular tissue ( the vascular system ) in the stem is very varied , giving a number of different types of stele 茎中维管组织的排列方式多种多样,由此产生多种类型的中柱。
Vascular tissue transports water and nutrients through the plant and also provides strength and support 维管组织不仅可以在植物体内运输水分和营养物质而且为植物体提供支撑力,具有支持作用。
When mature the gametophyte shows differentiation into stem and leaves but there are no roots or vascular tissues , but mosses do possess elongated conducting cells 当成熟时,配子体表现出茎和叶的分化,但没有根和维管组织,但藓类拥有一些延长的传导细胞。