Post a New Question


posted by on .

20. Three common characteristics of adult vertebrates are
a. skull, notochord, and complex organ system
b. backbone, segmentation, and open circulatory system
c. two pairs of jointed appendages, cephalization, and internal skeleton
d. hydrostatic skeleton, bilateral symmetry, and true coelom

24. A backbone, gills, and single-loop blood circulation are characteristics of
a. cartilaginous fish
b. gelatinous fish
c. jawless fishes
d. all of the above

31. Endothermic metabolism, complete ventricle division in heart, and a very efficient respiratory system are characteristics of
a. reptiles
b. birds
c. amphibians
d. fish


Answer This Question

First Name:
School Subject:

Related Questions

More Related Questions

Post a New Question