Phylum Arthropoda Test (all questions solved)

What are the 3 body parts an organism must have to be in Phlum Arthropoda? correct answers A head, a thorax, and an abodomen All organisms in Phylum Arthropoda have _______ kinds of parts. correct answers different Phylum Arthropoda organism have _________ bodies and __________ groupings. correct answers segmented; distinct These organisms have _________ appendages. correct answers jointed What kind of skeletons do these organisms have? correct answers exoskeletons What is an exoskeleton? correct answers a hard skeleton on the outisde of the body What makes the skeleton's so hard? correct answers chitin What is in chitin? correct answers protein and lipids Why are exoskeletons waterproof? correct answers Because of the lipids in it What is molting? correct answers a shedding of the exoskeleton When can predators get its prey easily? correct answers When the prey is molting because the shell is soft All of these organisms have a ______ circulatory system. correct answers open What is an open circulatory system? correct answers where the bllod is not always in vessles and bathes the organs in blood What are the crustaceans? correct answers crawfish, crabs, lobsters, and shrimp Crustaceans are mostly aquatic which means __________________. correct answers They live in water most of the time Crustaceans have _________ of appedanges for protection and feeding correct answers specialization What does Decapods mean? correct answers ten legs How many body regionds do Decapods have? correct answers two What do decapods have reinforced with their exoskeletons to make it harder? correct answers calcium carbonate(limestone)