
【名词&注释】
营养枝(vegetative shoot)、横切面(transverse section)
[单选题]细胞与根轴的横切面平行的壁称为( )。
A. 切向壁
B. 径向壁
C. 横向壁
D. 弦向壁
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举一反三:
[单选题]问荆和节节草都无营养枝和生殖枝之分,枝端能产生孢子叶球。( )
A. 正确
B. 错误
[单选题]__ unemployment and crime are high, it can be assumed that the latter is due to the former.
A. Before
B. Where
C. Unless
D. Until
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