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Cnidaria: Quiz


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Question 1: [28] The identification of some of these as embryos of animals has been contested, but other fossils from these rocks strongly resemble tubes and other mineralized structures made by ________.
ScleractiniaGorgonianCoralCoral reef

Question 2: [22] Some sea anemones and jellyfish have a symbiotic relationship with some fish; for example ________ live among the tentacles of sea anemones, and each partner protects the other against predators.
Ocellaris clownfishMaroon clownfishClownfishCinnamon clownfish

Question 3: Some large jellyfish species have been used in Chinese cuisine at least since 200 ________, and are now fished in the seas around most of South East Asia.
Julian calendarByzantine calendarAnno DominiGregorian calendar

Question 4: (________, online) ISSN 0008-4301
Portable Document FormatHTMLOffice Open XMLOpenDocument

Question 5: Stauromedusae, although usually classified as jellyfish, are stalked, sessile animals that live in cool to ________ waters.
North American ArcticDesertAntarcticaArctic

Question 6: Chemical changes in the liquid in the cnida make it a much more ________ solution, so that osmotic pressure forces water in very rapidly to dilute it.
SolubilityTotal dissolved solidsConcentrationSolvent

Question 7: For example in Scyphozoa (jellyfish) and ________ (box jellies) a larva swims until it finds a good site, and then becomes a polyp.
CnidariaBryozoaCtenophoraBox jellyfish

Question 8: Hydras and some ________ can move slowly over rocks and sea or stream beds by various means: creeping like snails, crawling like inchworms, or by somersaulting.
CnidariaSea anemoneCoralJellyfish

Question 9: Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like ________, or both.

Question 10: In some colonial polyps a chitinous ________ gives support and some protection to the connecting sections and to the lower parts of individual polyps.
RootWoodPlant stemBark

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