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【简答题】
美国科学家将分离得到的成熟胡萝卜根的韧皮部细胞进行培养，由单个细胞发育成完整的新植株(如下图)。 请分析： (1)这种生殖方式属于_______，所用的技术是_________。 (2)分离出来的胡萝卜根细胞成为细胞团是通过________分裂来完成的。 (3)细胞团中的相同的细胞在发育成胚状体和植株过程中，形态、结构和生理功能上出现了差异，这种现象叫做细胞的_____________。 (4)本实验说明植物细胞具有________________。 (5)在培养试管植物时，试管内应至少放入_____种矿质元素。其中应大量供给的元素是______________元素。植物缺少Ca时首先受到损伤的部位是________。(幼叶/)。
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