Science Unit 13 Quiz Crossword
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
                          
 
 
Down: 1) An internal gas-filled sac that helps fish stabilize its body at different depths.2) The force that water exerts upward on any underwater object.3) Organisms that have a backbone.4) A vertebrate that lives in the water and has fins.5) a watery fluid produced by the kidneys that contains urea and other waste materials.7) A series of similar bones that line up to form a backbone.9) A flexible rod that supports a chordate’s back.12) The specific environment in which an animal lives. Across: 6) A connective tissue that is more flexible than bone and that gives support to some parts of the body.8) An ectothermic vertebrate that spends its early life in water. (means “double life”) Includes frogs, toads, salamanders, and newts.10) An ectothermic vertebrate that has lungs and scaly skin. includes snakes, turtles, alligators, crocodiles and lizards.11) The phylum whose members have a notochord, a nerve cord, and slits in their throat area at some point in their lives.13) Animals that do not produce much internal temperature. (“cold-blooded”)14) Animals whose body controls and regulates its temperature by controlling the internal heat it produces. (“warm-blooded”) Common types include birds and mammals.
 

 

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