The cross section in the accompanying figure is representative of the internal structures found in:
a. phoronids.
b. nemerteans.
c. gastropods.
d. flatworms.
e. oligochaetes
e
Biology & Microbiology
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In mollusks, the folds of tissue that arise from the dorsal body wall and enclose a cavity surrounding the visceral mass are called the
A. foot. B. mantle. C. nephridia. D. radula. E. lophophore.
Biology & Microbiology
Which of the following use light energy to synthesize organic compounds from CO2?
a. photoautotrophs b. photoheterotrophs c. chemoautotrophs d. chemoheterotrophs e. parastic chemoheterotrophs
Biology & Microbiology
Modern classification is based on:
a. physiology b. fossils c. phylogeny c. morphologenics
Biology & Microbiology
Although diversity of communities is affected by processes acting on the local level, it is also directly related to regional rates of species production and immigration.
a. true b. false
Biology & Microbiology