Ch.33 - InvertebratesSee all chapters
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Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
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Ch.11 - Cell Signaling
Ch.12 - Cell Division
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Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
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Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
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Ch.47 - Nervous System
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Ch.55 - Conservation Biology

Porifera and Cnideria

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Sections
Porifera and Cnideria
Lophotrochozoans
Ecdysozoans
Echinoderms

Concept #1: Porifera and Cnideria

Additional Problems
A class of cnidarians that lacks a medusa stage isa. Hydrazoab. Cubazoac. Anthozoad. Scyphozoa
Cnidarian digestion isa. internal and extracellularb. internal and intracellularc. internal, extracellular and intracellulard. external and intracellulare. external, extracellular and intracellular
Cnidarian larvae are known asa. planulaeb. cercariaec. metacecariaed. polypse. medusae
Which of the following is characteristic of sponges?a. symmetryb. sexual reproductionc. tissuesd. organse. adult mobility
Which of the following is not a characteristic found in cnidarians?a. tissuesb. symmetryc. sexual reproductiond. asexual reproductione. organs
Which one of the following characteristics is found in cnidarians?a. organsb. respiratory systemc. blood vesselsd. specialized internal cavitye. nervous system
Water taken in through the pores in sponges exits through thea. mesogleab. spiculesc. osculumd. gastrovascular cavitye. coelenteron
The planulae of _______________ develop only into polypsa. Hydrozoab. Ctenophorac. Scyphozoad. Cnidariae. Anthozoa
Which of the following have a one-way digestive system?a. ctenophoransb. flukesc. tapewormsd. free living flatwormse. cnidarians
The sponges have all of the following characteristics except:a. highly specialized cellsb. simple tissuesc. a gel-like matrixd. cell recognitione. complex multicellularity
Which one of the following is not a member of the phylum Cnidaria?a. jellyfishb. comb jellyc. hydrad. corale. sea anemone
Cnidarians are:a. asymmetricalb. bilaterally symmetricalc. radially symmetricald. trisymmetricale. none of the above
A cnidocyte is a specialized cell used for:a. sensing lightb. digesting foodc. capturing foodd. sensing movemente. circulating water
Why would tapeworms need to be hermaphrodites, given that they can only live inside of the intestines of animals?