原題:
[生物化學(xué)]龍膽與堅(jiān)龍膽根橫切面主要區(qū)別點(diǎn)是

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龍膽與堅(jiān)龍膽根橫切面主要區(qū)別點(diǎn)是
A.龍膽有表皮，堅(jiān)龍膽無
B.龍膽內(nèi)皮層明顯，堅(jiān)龍膽不明顯
C.龍膽外皮層明顯，堅(jiān)龍膽不明顯
D.龍膽內(nèi)皮層為一個(gè)母細(xì)胞分隔成數(shù)個(gè)子細(xì)胞，堅(jiān)龍膽無
E.龍膽中間髓部明顯，堅(jiān)龍膽無髓部
答案：
E