Chapter_33 - Biology 7e(Campbell Chapter 33 Invertebrates 1...

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Biology, 7e (Campbell) Chapter 33: Invertebrates 1) What are the cells in a sponge that are primarily responsible for trapping food particles from circulating water? A) amoebocytes B) choanocytes C) mesohyl cells D) flame cells E) epidermal cells(porocytes) 2) Which of the following are not associated with sponges? A) oscula B) spongocoels C) cnidocytes D) spicules E) amoebocytes 3) A sponge's skeletal materials (spicules, spongin) are manufactured by the A) pore cells. B) epidermal cells. C) choanocytes. D) zygotes. E) amoebocytes. 4) Which chemical is not normally found in any sponges? A) chitin B) sponging C) calcium carbonate D) silica E) antibiotics 5) Which class of sponge contains the glass sponges? A) Demospongiae B) Calcarea C) Hexactenillda D) A and B E) A and C 6) A radially symmetrical animal that has two embryonic tissue layers belongs to which phylum? A) Porifera B) Cnidaria C) Platyhelminthes D) Nematoda E) Echinodermata 7) All of the following are characteristics of the phylum Cnidaria except A) a gastrovascular cavity. B) a polyp stage. C) a medusa stage. D) cnidocytes. E) a pseudocoelom.
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8) What is the best way to describe the brain of a sea anemone? A) a thick ring around the mouth B) a series of ganglia at the base of the tentacles C) a pair of ganglia at the anterior end D) a single ganglion in the body wall E) nonexistent 9) Which of the following is a correct statement about members of the phylum Cnidaria? They A) are not capable of locomotion because they lack true muscle tissue. B) are primarily filter feeders. C) have either or both of two body forms: mobile polyps and sessile medusae. D) use a gastrovascular cavity for extracellular digestion. E) are the simplest organisms with a complete alimentary canal (two openings). 10)
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This note was uploaded on 02/27/2009 for the course SC 424111 taught by Professor Various during the Winter '08 term at Kasetsart University.

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Chapter_33 - Biology 7e(Campbell Chapter 33 Invertebrates 1...

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