front 1 What is the most simple metazoan? | back 1 Cnhidarians |
front 2 What type of body symmetry do Cnidarians have? | back 2 Radial (some biradial) |
front 3 oral-aboral axis | back 3 axis in which radiate body parts are arranged around |
front 4 What level of organization do Cnidarias have? | back 4 tissue |
front 5 What are the classes of Cnidarians? | back 5 -Staurozoa
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front 6 How many species of Staurozoa are there? | back 6 50 |
front 7 How many species of Cubozoa are there? | back 7 10 |
front 8 How many species of Anthozoa are there? | back 8 6000 |
front 9 How many species of Hydrozoa are there? | back 9 2700 |
front 10 How many species of Scyphozoa are there? | back 10 150 |
front 11 Which classes have a medusoid body form? | back 11 -Scyphozoa
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front 12 Which classes exist only in a medusoid body form? | back 12 -Scyphozoa
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front 13 Which classes have an alternation of generations between medusoid and polyp forms? | back 13 Hydrozoa |
front 14 Which class has hexaradial or octaradial symmetry? | back 14 Anthozoa |
front 15 Which class exhibits strobilation? | back 15 Scyphozoa |
front 16 Are Cnidarians diploblastic or triploblastic? | back 16 diploblastic |
front 17 What germ layers do Cnidarians have? | back 17 endoderm and ectoderm |
front 18 Are germ layers adaptive or derived in Cnidarians? | back 18 adaptive |
front 19 Is the gastrovascular cavity of Cnidarians complete? | back 19 no |
front 20 Are Cnidarians protostomes or dueterostomes? | back 20 protostomes? |
front 21 What type of skeleton do Cnidarians tend to have? | back 21 hydrostatic |
front 22 How does the gastrovascular cavity open to the environment? | back 22 mouth |
front 23 What is the sister phylum of Cnidarians? | back 23 Ctenophora |
front 24 What are Ctenophora? | back 24 comb jellies |
front 25 What are Ctenophora and Cnidaria grouped together as? | back 25 Radiate phyla |
front 26 What is a big difference between Ctenophora and Cnidaria? | back 26 Cnidaria have cnidocytes and dimorphism is common in them |
front 27 cnidocytes | back 27 stinging cells |
front 28 dimorphism | back 28 presence in a species of more than morphological kind of individual
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front 29 What is another name for the polyp form? | back 29 hydroid form |
front 30 How do polyps move? | back 30 they don't (sessile) |
front 31 What is another name for the medusa form? | back 31 jellyfish form |
front 32 What type of movement do medusa have? | back 32 free swimming |
front 33 What class is considered the "true jellies"? | back 33 scyphozoans |
front 34 How do polyps reproduce? | back 34 asexually |
front 35 How do medusa reproduce? | back 35 sexually |
front 36 Are medusa diploid or haploid? | back 36 diploid |
front 37 Are polyps diploid or haploid? | back 37 diploid |
front 38 Are Cnidarian gametes diploid or haploid? | back 38 haploid |
front 39 Why are hydras atypical of the class hyrdozoa? | back 39 no medusa stage |
front 40 Do hydra live in solitude or colonies? | back 40 solitude |
front 41 Are hydras freshwater or marine? | back 41 freshwater |
front 42 Is obelia marine or freshwater? | back 42 marine |
front 43 Do Obelia live in solitude or colonies? | back 43 colonies |
front 44 Are Obelia polyps or medusa bigger? | back 44 polyps |
front 45 Which species of hydrozoa are more plantlike or animal-like in appearence? | back 45 Obelia |
front 46 Is Gonionemus freshwater or marine? | back 46 marine |
front 47 Are Gonionemus polyps or medusa bigger? | back 47 medusa |
front 48 How are medusa produced? | back 48 Asexual budding |
front 49 Where are hydras found? | back 49 pools, quiet springs, and spring ponds--- underneath vegetation |
front 50 hypostome | back 50 conical area surrounded by tentacles that bears the mouth |
front 51 Where are the testes located in a hydra? | back 51 bud on its side at the oral end |
front 52 operculum | back 52 tiny lid of a cnidocyte that pops off when the nematocyst discharges |
front 53 mesoglea | back 53 thin, jelly like layer that acts as an elastic skeleton and provides strength and flexibility |
front 54 Where does extracellular digestion begin? | back 54 gastrodermis |
front 55 cnidocils | back 55 tiny hairlike triggers projecting from nematocytes,help discharge the nematocyst |
front 56 What structure gives a warty appearance on the surface of the tentacles? | back 56 cnidocytes |
front 57 basal disc | back 57 how a hydra sticks to surfaces- on the aboral surface |
front 58 nematocytes | back 58 stinging organelle of a cnidocyte |
front 59 Which cells develop to replace cnidocytes? | back 59 interstitial cells |
front 60 What type of cells make up the epidermis of hydra? | back 60 epitheliomuscular cells |
front 61 Where is the nerve net located? | back 61 Right below the epidermal layer |
front 62 intersitial cells | back 62 small dark embryonic cells that can be found at the bases of epitheliomuscular cells |
front 63 gland cells | back 63 secrete mucus onto the body |
front 64 mesoglea | back 64 noncellular layer between the epidermis and gastrodermis, elastic skeleton |
front 65 What do nutritive-muscular cells do? | back 65 -allow the hydra to change shape
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front 66 What cells make up the gastrodermis? | back 66 nutritive-muscular cells |
front 67 What cells are found in both the epidermis and gastrodermis? | back 67 sensory cells |
front 68 monoecious | back 68 organism has both male and female reproductive parts |
front 69 dioecious | back 69 organism is either male or female |
front 70 Where are sex organs found in hydra? | back 70 epidermis |
front 71 What do testes contain? | back 71 spermatazoa |
front 72 What side of a hydra are the ovaries found? | back 72 the basal end |
front 73 Where does a hydra zygote form? | back 73 attached to the parent |
front 74 dimorphic | back 74 having multiple stages (both polyp and medusa) |
front 75 What does an Obelia colony arise from? | back 75 planula larva |
front 76 stolon | back 76 rootlike fixture used for attachment |
front 77 coenosarc | back 77 the living part of the colony |
front 78 What secretes the persarc? | back 78 the epidermis |
front 79 perisarc | back 79 thin, protective covering of the coensarc |
front 80 zooids | back 80 another name for a polyp |
front 81 hydranths | back 81 nutritive polyps |
front 82 gongangia | back 82 reproductive polyps |
front 83 Which polyp of Obelia have tentacles | back 83 hydranths |
front 84 mudusae buds | back 84 grow on a stalk in the gongangia |
front 85 pore in the gongangia young medusae escape from | back 85 gonopore |
front 86 found in protected costal and bay areas | back 86 Gonionemus |
front 87 hydrozoan medusae | back 87 hyrdromedusae |
front 88 jellyfish of the class Scyphozoa | back 88 syphomedusae |
front 89 convex/aboral surface fof a medusae | back 89 exumbrella |
front 90 concave (oral) surface of a medusae | back 90 subumbrella |
front 91 make and store nemocysts, help in extracellular digestion, act as sensory organs | back 91 tentacular bulb |
front 92 organs of equilibrium, little sacs containing calcareous secretions | back 92 statocysts |
front 93 circular shelflike membrane that aids in subumbrellar movement | back 93 velum |
front 94 suspended from the central surface of the subumbrellar cavity with the mouth at the distal end | back 94 manubrium |
front 95 surrounds the mouth (x4) | back 95 oral lobes |
front 96 Wht does the gastrovasuclar cavity contain? | back 96 gullet, stomach, four radial canals,ring canal |
front 97 is the mesoglea thicker in the medusa or hydroi form? | back 97 medusa |
front 98 moon jelly | back 98 Aurelia auria |
front 99 Is the mesoglea thicker in hydromedusae or scyphomedusae? | back 99 scyphomedusae |
front 100 lacks a velum | back 100 Scyphozoans |
front 101 body arranged uun multiples of 4 | back 101 syphomedusae |
front 102 teramerous radial symmetry | back 102 arranged in furs |
front 103 Are scyphozoans monoiceous or diecous? | back 103 dieoucous |
front 104 Where d embryos develop in scyphozoans? | back 104 oral arms |
front 105 planula larvae | back 105 larvae of sscyphozoans, free swimming |
front 106 substratum | back 106 where planular larvae attach to mature |
front 107 scyphozoan polyps | back 107 scyphistomae |
front 108 buds off youn scyphoxzoan medusae | back 108 stobila |
front 109 young scyphozoan medusae | back 109 ephyrae |
front 110 lion's mane jellyfish | back 110 cyanea capiltata |
front 111 sea wasp | back 111 Chironex fleckeri |
front 112 sense organ containing a statacyst and ocellus | back 112 rhopalium |
front 113 flanks the rhopalium | back 113 lappet |
front 114 what are orl arms modifications of? | back 114 manubrium |
front 115 where re the gonads located in scyphozoan medusae | back 115 gastric pouches |
front 116 subgenitalpit | back 116 respiratory function |
front 117 digestive canal that follows the outer margin | back 117 ring cnal |
front 118 stomach and canal system that resembles a wheel | back 118 medusoid gut (scyphozoan) |
front 119 What tye of digestion do scyphozoan medusae have? | back 119 intracellular and extracellular |
front 120 What bis the most common sea anaenome on the Atlatic coast? | back 120 Metridium senile |
front 121 What class lacks a medusa? | back 121 class anthozoa |
front 122 anthozoan white thradlike structure containing nematocysts usded for defense? | back 122 acontia |
front 123 3 regions of a sea anenomae | back 123 oral idsc, basal disc, cylindrical coulumn |
front 124 smooth surfaced ciliated groove surrounding ananomae's mouth, circulates water | back 124 siphonoglyph |
front 125 peristome | back 125 smooth space between the outh and tentacles |
front 126 primary septa | back 126 separates the gastrovasular cavity into 6 chambers |
front 127 ananomoae gonads | back 127 resembles stacks of coins |
front 128 what class does coral belong to? | back 128 anthozoa |
front 129 rim of coral cup | back 129 theca |
front 130 radial paritions within the theca | back 130 sclerosepta |
front 131 Which class has both polyps and medusa, though one may supressed, velum presetnt | back 131 hydrozoa |
front 132 true jellyfish, medusa dominant, no velum, solitary | back 132 scyphozoa |
front 133 soliatry, no medusa, clusters of 8 bdy plan | back 133 staurozoa |
front 134 solitary, reduced polyp, square medusa cross section, no velum but has a velarium | back 134 cubozoa |
front 135 all polyps, no medusae, gastrovasular caivities separated by mesentaries | back 135 anthozoa |