题目内容
丁香花粉粒的显微鉴别特征是
2021-12-23
A.少见，圆球形，外壁近光滑
B.表面有似网状雕纹，单萌发孔
C.外壁有短刺及雕纹，萌发孔2个
D.外壁有细刺状突起，萌发孔3个
E.极面观略呈三角形，赤道面观双凸镜形
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