Q: Vertebrates evolved from primitive forms of which creature? Choices: - arthropods - humanoids - cephalopods - chordates A:
chordates

Q: The contents of which organ are mixed every 20 seconds? Choices: - the metabolism - pancreas - kidney - the stomach A:
the stomach

Q: What class are centipedes and millipedes in? Choices: - xerophyte - spirogyra - terapoda - myriapoda A:
myriapoda