Chapter Questions
List the characteristics that, taken together, distinguish animals from other kinds of organisms.
List the distinguishing characteristics of each phylum discussed in this chapter, and give an example of a member of each phylum.
Briefly describe each of the following adaptations, and explain its adaptive significance: bilateral symmetry, radial symmetry, cephalization, closed circulatory system, coelom, segmentation.
Describe and compare the respiratory systems of the four major arthropod groups.
Describe the advantages and disadvantages of the arthropod exoskeleton.
In which of the three major mollusk groups is each of the following characteristics found?a. two hinged shellsb. a radulac. tentaclesd. some sessile memberse. the best-developed brainsf. numerous eyes
What features of cnidarians make them strong predators?
Discuss the features that differentiate myriapods from roundworms.