Axial skeleton
What will be an ideal response?
Long axis of body; skull, vertebral column, rib cage
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Most of the ocean’s productivity occurs
a. in the open ocean b. in the intertidal zone. c. in the neritic zone. d. near hydrothermal vents. e. in the benthic province.
The first animals evolved from ________
A) colonies of protists B) colonies of plants C) colonies of bacteria D) colonies of archaea
The term homoplasy is most applicable to which of the following features?
A) the legless condition found in various lineages of extant lizards B) the five-digit condition of human hands and bat wings C) the fur that covers Australian moles and North American moles D) the bones of bat forelimbs and the bones of bird forelimbs
In bacillus anthracis the protective antigen (PA)
A. is a protease that inhibits blood clotting B. is a protese that inhibits cell growth C. binds to cells D. is an adenylate cyclase