植物细胞一般有细胞核、细胞质和细胞膜细胞壁三大部分,尽管机能上各有不同,却是个互相依存的有机整体。同一细胞的核和质之间本来是相适应的。在长期演变或人工引变下,不论胞核或胞质发生变化,经过自然选择 Plant cells generally have the nucleus, cytoplasm and cell membrane cell wall three parts, although the function is different, but it is an interdependent organic whole. Between the same cell nucleus and quality have been adapted. In the long-term evolution or artificial changes, regardless of changes in nuclei or cytoplasm, after natural selection