_____, which include lobsters and crabs, have _____ legs and, in the ocean, fill many of the ecological roles filled by insects on land
A. Crustaceans; branched
B. Chelicerates; branched
C. Crustaceans; unbranched
D. Chelicerates; unbranched
E. none of these
A
Biology & Microbiology
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a. chemoreceptor. b. mechanoreceptor. c. photoreceptor. d. thermoreceptor. e. all of these.
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Fossils and DNA evidence indicate that birds are members of a clade in which group?
A. mammals B. reptiles C. amphibians D. fishes E. They are in their own group.
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Rabies is caused by a
A) bacterium. B) prion. C) virus. D) viroid. E) fungus.
Biology & Microbiology
The ozone layer is found in which layer of the atmosphere?
What will be an ideal response?
Biology & Microbiology