Which type of survivorship curve can be depicted as a straight line (where mortality rates are roughly equivalent at all life stages)?
A. Type I
B. Type II
C. Type III
B
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Molecular sequence analysis has revealed that Crustacea is paraphyletic, because it includes an ancestor but not all of
its descendants; the descendants not included in this clade are the ____.
a. trilobites b. myriapods c. hexapods d. annelids e. chelicerates
Four of the five answers listed below are bases used to construct nucleic acids. Select the exception
a. cytosine b. adenine c. thymine d. guanine e. phenylalanine
What do shipworms and a peanut worms have in common?
a. both can bore through hard substrata. b. both are filter feeders. c. both are in the same phylum. d. both are hermaprodites.
Four of the five terms that describe the adaptive immune response. Select the exception
a. specific b. self/nonself recognition c. memory d. immediate response e. diversity