A water-vascular system is characteristic of the phylum ____

a. A water-vascular system is characteristic of the phylum ____.
b. Annelida
c. Chordata
d. Mollusca
e. Echinodermata


ANSWER: e

Biology & Microbiology

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In the Tewsbury and Nabhan study, which animals were observed most likely to eat the hot peppers?

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The anticancer drug taxol acts to

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Changes at the molecular level can turn proto-oncogenes into oncogenes. These changes cause unregulated cell division. Which disease is caused by this transformation?

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