1 Answer:
Which of the following characteristics is not shared by all
arthropods?
a. an exoskeleton
b. a segmented body
c. a water vascular system
d. jointed appendages

2 Answer:
An arthropod has
a. an open circulatory system
b. a closed circulatory system
c. no circulatory system
d. no blood

3 Answer:
Which of the following is not a respiratory organ of the
arthropods?
a. gills
b. book lungs
c. air tubes
d. lungs