作者yuseke (大将)
看板TransBioChem
标题[生物] about bark
时间Wed Oct 12 19:50:55 2011
痾
以下是一题期中考考古= =
Which of the following is ""NOT"" part of an older tree's bark?
(A)cork
(B)cork cambium
(C)lenticels
(D)secondary xylem
(E)secondary phloem
为甚麽答案是E不是D...
还是答案错了.... 囧
bark的意思不就是维管束形成层以外的所有部位吗...
xylem不是总是在维管束形成层以内?不会吧 = =....
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