The proper order of embryonic development is
A. morula-cleavage-blastula-gastrula.
B. gastrula-cleavage-blastula-morula.
C. cleavage-morula-blastula-gastrula.
D. blastula-cleavage-morula-gastrula.
Answer: C
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In order to be useful for constructing a phylogeny, a character must:
A. have a genetic basis. B. vary within a species. C. have only one state. D. show the same state across several species. E. All of the answer options are correct.
Common octocorals are the:
a. sea pens. b. gorgonians. c. sea anemones. d. fire corals. e. sea nettles.
Four of the five answers listed below are layers of the digestive tract. Select the exception
a. peritoneum b. mucosa c. serosa d. submucosa e. muscle layer
What molecule can oxidize NADH?
A. ubiquinone B. acetaldehyde C. lactate D. isocitrate E. glucose