Which of the following is a type of ecdysozoan protostome?
a. Echinodermata
b. Ctenophora
c. Molluska
d. Chordata
e. Nematoda
E; Ecdysozoans include the nematodes, arthropods, and several other phyla not mentioned in the text. Lophotrochozoans include the mollusks (choice c), annelids, brachiopods, nemerteans, flatworms, and several other phyla not mentioned in the text. Deuterostomes include the echinoderms (choice a), hemichordates, and chordates (choice d). Sponges, cnidarians, and ctenophores (choice b) are not classified in any of these groups.
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A) methicillin resistance. B) M proteins. C) the ability to damage cell membranes. D) the ability to dissolve blood clots. E) hyaluronidase production.
Place the events of parturition in the correct order.
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