acoelomates 

  1. 名詞
acoelomate複數: 無體腔動物

    
                        
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例句

                

                    
    
                                                    
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                                " Unlike other bilaterians, Platyhelminthes have no internal body cavity, so are described as acoelomates .                            
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                                Flatworms are acoelomates , lacking a body cavity, as are their closest relatives, the microscopic Gastrotricha.                            
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                                Traditional taxonomy says that nemerteans are closely related to flatworms and that both are relatively "primitive" acoelomates .                            
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                                Free-living marine worms with a distinctive eversible proboscis consisting of a long, hollow tube; the unsegmented body is covered with cilia; like flatworms, arrow worms are acoelomates (without a coelom), but they do have a complete digestive system.                            
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                                Unlike other bilaterians, they are acoelomates (having no body cavity), and have no specialized circulatory and respiratory organs, which restricts them to having flattened shapes that allow oxygen and nutrients to pass through their bodies by diffusion.                            
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