The Porifera and Cnidaria have superficially similar body plans. Indicate which of the following does NOT describe equivalent features in the two groups.
A. spongocoel and gastrovascular cavity
B. mesohyl and mesoglea
C. osculum and mouth/anus
D. epithelial cells and epidermis
E. spongin and polyp
E. spongin and polyp
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If reasonably pure preparations of virus are available, the number of virus present may be determined by
A. photocolorimetry. B. gas chromatography. C. light microscopy. D. electron microscopy.
A ?COOH group is a(n) ____ group
a. carboxyl b. hydroxyl c. amine d. methyl e. carbonyl
What fraction of the time will the cross of Aa Bb with Aa Bb produce an offspring that will express the dominant trait
for one of the two alleles? a. 16/16 b. 9/16 c. 6/16 d. 3/16 e. 1/16
In the accompanying figure, which label designates the structures largely responsible for attracting potential
pollinators? a. 1 b. 3 c. 7 d. 8 e. 10