题目内容
丁香镜检花粉粒的特征是
2021-12-20
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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