天气预报 > 其他 > 根尖的成熟细区有无大液泡
根尖的成熟细区有无大液泡
更新时间: 2020-09-27 00:00:00  

有成熟区细胞已成熟,细胞内具有中央大液泡,是根吸收水和无机盐的主要部位。成熟区是根吸收水和无机盐的主要部位的原因是:

1、成熟区细胞具有中央大液泡;

2、成熟区表皮细胞向外突出形成根毛,增大了根表面积。

关键词: 成熟 液泡

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