Mollusks and Echinoderms Vocabulary Crossword
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
                            
 
 
Down: 1) An organism that excrete its intestines to defend themselves2) An opening that allows water to enter and leave an organism3) The largest class of mollusks4) An arrangement echinoderms have that uses water for movement6) A muscle that opens and closes the shells of clams and oysters7) A globe-shaped echinoderm8) An organism that have weak sections within their rays10) Organisms that use siphons for locomotion12) A thin membrane that produces an exterior or internal shell17) Hollow, thin-walled tubes that end in a suction cup 19) The round structure that holds water and is adjacent to a tube foot20) An organ used to gather food into cephalopods and gastropods Across: 5) Spines that are able to pinch9) The most popular echinoderm that can have up to 40 rays11) An organ that eliminates cellular waste from the body13) A tube that collects water and food14) An organ used for locomotion and to dig in sediment15) A tube that excretes waste and water16) An structure used to identify light18) A flat echinoderm that is covered in thin spines21) Brittle stars and sea cucumbers eat dead organisms22) Organisms that feed by using siphons23) Arms of a echinoderm
 

 

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