Platyhelminthes were the first organisms to have:a
fully developed brain.
b. notochord.
c. central nervous system.
d. eyes
ANS: C
Flatworms have a primitive central nervous system. Some species have a complex bundle of nerve
cells acting as a rudimentary brain. Information can be found in the section The Worm Phyla Are the
Link to Advanced Animals.
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Indicate whether the statement is true or false
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a. inches of mercury. b. millibars or hectopascals. c. pounds per square inch. d. atmospheres. e. torr.
Summarize three elements of the controversy about globalization
What will be an ideal response?