The epithelium forming the gills and intestine is also modified ciliated columnar. [Please select]
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There was none: all was interwoven stem, columnar trunk, dense summer foliageno opening anywhere. [Please select]
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When conditions become favourable for development a cavity appears near one end of the mass and the cells that form its walls assume a columnar form in vertical section. [Please select]
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The inner walls of the tubular part consist of non-ciliated columnar cells, and when the polypide is retracted it lies almost at right angles to the main axis of the zooecium. [Please select]
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