11．涡虫和水螅这两种动物具有一个共同特征�食和排出食物残渣都用口但在分类省它们却属于不同的无脊椎动物其分类依据是 A．身体是背腹 Sketch Coloring Page

11．涡虫和水螅这两种动物具有一个共同特征�食和排出食物残渣都用口但在分类省它们却属于不同的无脊椎动物其分类依据是 A．身体是背腹 Template

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tomski11．涡虫和水螅这两种动物具有一个共同特征�食和排出食物残渣都用口但在分类省它们却属于不同的无脊椎动物其分类依据是 a．身体是背腹 coloring

绘制水螅纵切图和涡虫横切图。知乎 sketch template

人教新版八年级上册《515 两栖动物和爬行动物》2021年同步练习卷（6）菁优� sketch template

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如图所示为水螅的纵切面和涡虫示意图，据图回答： 1 一图中食物由进入；在 消化，食物残渣由 排出。 2水螅特有 sketch template

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