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1Phylum Arthropoda is the most abundant and most diverse phylum of animals.
A)True
B)False


2What is the derivation of the term Arthropoda?


3Which of the following is not an adaptation of arthropods?
A)closed circulatory system
B)exoskeleton
C)jointed appendages
D)segmentation


4The exoskeleton of arthropods is made of ________.
A)chilaria
B)callose
C)chitin
D)cellulose


5What are three functions of an exoskeleton?


6Name the two classes in the subphylum Chelicerata.


7In the Class Arachnida, how does the function of the chelicerae differ from the function of the pedipalps?


8Crustaceans have ____________ or double-branched appendages.


9Describe two specialized appendages and their functions.


10Appendages of two different taxa that have similar functions but different embryological origins are ________.
A)biramous
B)homologous
C)analogous
D)uniramous


11Crayfish have several appendages that are chelate (pincer-like with opposing claws).
A)True
B)False


12Crayfish have a dorsal heart and a ventral nerve cord.
A)True
B)False


13Name the three classes of subphylum Uniramia.


14Centipedes and millipedes have one pair of legs on each body segment.
A)True
B)False


15All insects have similar mouthparts.
A)True
B)False


16In insects, breathing pores called ______________ are located on abdominal segments and open into _______________ that conduct oxygen throughout the body.


17Identify the taxonomic class of these organisms. a. shrimp b. ant c. lobster d. horseshoe crab e. centipede f. spider g. bee h. scorpion i. butterfly j. millipede


18Describe two ways arthropods affect your life.





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