Members of the lineage ____ are called lancelets. As adults they live mostly buried in the sand in
warm, shallow marine habitats, but they do have well-developed segmented muscles and can move.
a. Petromyzontoidea
b. Placodermi
c. Cephalochordata
d. Urochordata
e. Myxinoidea
C
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Which of the following is found in cocoa?
a. Epicatechin. b. Caffeine. c. Resveratrol. d. Curcumin. e. Nicotine.
Which of the following organs may be removed without harming the body?
a. liver b. pancreas c. heart d. gallbladder e. brain
A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n)
A) obligate aerobe. B) facultative anaerobe. C) aerotolerant anaerobe. D) microaerophile. E) obligate anaerobe.
Assume that a cross is made between tall and dwarf tobacco plants. The F1 generation showed intermediate height, while the F2 generation showed a distribution of height ranging from tall to dwarf, like the original parents, and many heights between the
extremes. These data are consistent with which one of the following modes of inheritance? A) hemizygosity B) codominance C) multiple-factor inheritance D) alternation of generations E) incomplete dominance