A description of sharks that does not apply to other fish groups is that
A. they are bony, with ray-finned appendages.
B. they are cartilaginous craniates without jaws.
C. they are bony with lobe-finned appendages.
D. they have scaleless skin with lateral lines for sensing vibrations.
E. they are cartilaginous craniates with jaws.
E. they are cartilaginous craniates with jaws.
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The osmoregulatory/excretory system of an insect is based on the operation of _____
A) protonephridia B) metanephridia C) Malpighian tubules D) nephrons E) ananephredia
Which muscle type is found in the walls of body tubes and cavities of vertebrates, such as blood vessels and the
intestines?
a. cardiac b. smooth c. skeletal d. rough e. epithelial
A mantle is found only among the:
a. arthropods b. annelids c. echinoderms d. mollusks e. chordates
Cytotoxic T cell receptors recognize:
What will be an ideal response?