题目内容
红花的粉末特征是
2021-10-23
A.花粉粒类圆形，外壁有刺状突起
B.花冠裂片顶端表皮细胞外壁突起呈绒毛状
C.花柱表皮细胞分化成圆锥形末端较尖的单细胞毛
D.含大量草酸钙簇晶
E.有长管道状分泌细胞，并含红棕色分泌物
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