Match each mollusk with the correct taxonomic class.
1. nautili
2. snails
3. chitons
4. clams
a. Polyplacophora
b. Gastropoda
c. Bivalvia
d. Cephalopoda
1. d. Cephalopoda
2. b. Gastropoda
3. a. Polyplacophora
4. c. Bivalvia
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The ciliary muscle
a. controls the eardrum. b. controls the shape of the lens to allow focusing. c. holds the bones of the middle ear in place. d. enables the eyeball to move so that a person may see an object without moving the head. e. is responsible for the size of the pupil in different light intensities.
Feathers in birds appear to have first evolved for insulation but later conveyed a new advantage in helping create light aerodynamic surfaces. the switch in function is an example of a(n) ____________.
A. Paedomorphosis B. An analogy C. Exaptation D. An adaptation
Organisms with pseudopods can surround other organisms and trap them in a ________ for digestion
Fill in the blank(s) with correct word
Robert Koch was involved in research on all of the following topics EXCEPT
A) the cause of anthrax. B) the cause of fermentation. C) development of a method to determine the cause of an infectious disease. D) the cause of tuberculosis. E) techniques for isolating microbes in the laboratory.