Describe the difference of secondary structure between root and stem.

简述根与茎次生结构的区别？

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Describe the difference of primary structure between root and stem.

简述根与茎初生结构的区别？

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Its stem is the typical xerophilous structure.

茎为典型的旱性结构。

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Its stem is the typical xerophilous structure.

茎为典型的旱性结构。

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