动物近江牡蛎的性状特征是A.贝壳呈长片状,背腹缘几平行,右壳较平,左壳凹陷很深B.贝壳四方形,背缘平直,腹缘圆,单壳C.贝壳呈类三角形,背腹缘呈八字形,右...

作者: tihaiku 人气: - 评论: 0
问题 动物近江牡蛎的性状特征是
选项

A.贝壳呈长片状,背腹缘几平行,右壳较平,左壳凹陷很深
B.贝壳四方形,背缘平直,腹缘圆,单壳
C.贝壳呈类三角形,背腹缘呈八字形,右壳外淡黄色
D.贝壳呈圆形、卵形或三角形,右壳较小,表面环生同心鳞片
E.贝壳呈类三角形,背腹缘呈八字形,右壳外淡黄色,内面红黄色

答案 D
解析

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