有什麼plant cell沒有cell wall?(是不是xylem cell)?

2007-01-12 5:22 am
有什麼plant cell沒有cell wall?(是不是xylem cell)? Besides,有什麼plant的cell wall 是 circular? why?

回答 (1)

2007-01-18 4:54 am
✔ 最佳答案
All plant cell must have cell wall~
the cell wall of xylem is cirular and there is no reason...


hope i can help u


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