A taxon that includes a single common ancestor and all its descendants is a _____ group
A. monophyletic
B. paraphyletic
C. polyphyletic
A
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The simple body structure of a flat, branching, ribbonlike plate of tissue closely pressed against damp
soil is called a
a. rhizoid. b. gemma. c. antheridium. d. archegonium. e. thallus.
Secondary succession occurs ____
a. after a fire b. on a new sand dune c. on bare rock d. immediately after the formation of a man-made lake e. on a newly-formed volcanic island
Which of the following enzymes is responsible
for the wide range of diversity found in RNA viruses?
a. DNA polymerase b. RNA polymerase c. reverse transcriptase d. protease e. ligase
What type of bond links two polynucleotide chains to each other in a double helix DNA?
A.) glycosidic bond B.) hydrogen C.) phosphodiester D.) phosphoanhydride E.) disulfide