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从三七主根上剪下的较细根茎称为()

发布日期:2021-03-13

从三七主根上剪下的较细根茎称为()
A

麻点

B

筋络

C

铲筋

D

剪口

E

筋条

试题解析

根茎

根茎是指延长横卧的根状地下茎。有明显的节和节间,节上有退化的鳞片叶,前端有有顶芽,旁有侧芽,向下常生有不定根。根吸收土壤小的水分和矿物质,而茎干暴露在光和大气中,在根和茎干之间存在物质的运输。

中文名
根茎
根是植物的营养器官
学科
生物
根茎拼音
gēn jīng
植物体上生枝长叶开花的部分
领域
生命科学

主根

主根(axial root),亦称“初生根”。由胚根发育而成的根。主根具有强烈的向地性,可垂直向土层深处生长2-3米,一般栽培的灌木型茶树根系可深入1米以下的土层。

中文名
主根
拼音名
Zhǔ Gēn
学科
植物学
外文名
principal root;main root;axial root
根的类型
主根、侧根、不定根
来源
由胚根发育而成的根

称为

称为,汉语词语,拼音是chēng wéi,意思是指叫做。

中文名
称为
注音
ㄔㄥ ㄨㄟˊ
拼音
chēng wéi
释义
叫做。

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