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they have the medusa stage dominantly and no polyp
examples true jellies
examples true jellies
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have dominant polyp stage and no medusa, can be found in either colonial or solitary polyps and need algae to obtain energy?
Example sea anemones and corals
Example sea anemones and corals
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Bio chapter 33
Phylum and classes
| Question | Answer |
|---|---|
| they have the medusa stage dominantly and no polyp examples true jellies | Class scyphoza |
| have dominant polyp stage and no medusa, can be found in either colonial or solitary polyps and need algae to obtain energy? Example sea anemones and corals | Class anthrozoa |
| these have a main polyp cycle but medusa is also present? can reproduce both sexually and asexually examples: Obelia, fire coral, and hyrda | Class Hydrozoa |
| have fibers made of either spongin, silica or both for spicules | class demospongia |
| only have silica spicules | class hexactinellidae |
| calcium carbonate spicules only | Class Calcarea |
| have cilia-ted epidermis that aids in locomotion and are free living ex: dugesia and flatworms | class turbellaria |
| Have suckers for attachment, multiple hosts in life and are reproductive machines? Ex: schistosoma | Class Trematoda |
| Classes- Tremetoda, turbellaria, cestoda | Phylum Platyhelimnthes |
| Classes- demospongia, clacarea, and hexactinellida | Phylum Sponges |
| Classes- Scyphoza, anthrozoa, and hyrdozoa | Phylum Cnidarians |
| what does not have a digestive tract, a specialized epidermis to resist hosts' digestive enzymes ? Ex: Tapeworms | Class cestoda |
| Classes- Polyplacophora, gastropoda, bivalva, and cephalopoda | Phylum- Mollusca |
| they must have 8 interlocking plates, be in rocky intertidal areas, and a radula needs to be present.. example of them are chitons | Class polyplacophora |
| these creatures have well developed eye stalks and sensory tentacles, they must have an opperculum and they are able to use torsion. examples are snails and slugs | class gastropoda |
| these need to have two shells that are able to close with abductor muscles, suspension feeders and a crystalline style, some examples are clams, scallops mussels | class bivalvia |
| they have heads that are used for high speed predation, a nervous system and no shell examples: octopus and squids | class cephalopoda |
| Classes- polychaeta, olgocheata,and hirudinea | Phylum Annelid |
| we find these in tubes with paired appendages on each segment and are mainly bottom dwellers Ex: Christmas tree worms | Class polycheata |
| Are hermaphodites but need cross fertilization, feed on organic material and has a clitellum | class oligcheata |
| They need blood to live but can go weeks without it (hematophagy) they have two sets of suckers and usually attach to prey and secret hirduin to thin blood Examples: Leeches | Class Hirundinea |
| sub phylums- trilobitomorpha, cheliceraformes, myriapoda, hexapoda, and crustacea classes- merostomata, arachnida, chilopoda, and diploda | Phylum Arthropoda |
| these dominated the ocean about 200 to 260 million years ago with their three lobed bodies | sub phyla trilobitomorpha |
| these species have two body parts called cephalothorax and abdomen with 6 pairs of appendages on the cephalothoroax and have chelicera to eat ex: Horseshoe crabs, spiders, and scorpions | sub phyla cheliceraformes |
| Horseshoe crabs | class merostomata |
| spiders and scorpions. they have modified chelicera to fangs to paralyze prey | class aracnida |
| they need to have a head, thorax and an abdomen, with the first head appendage holding just an antenna and the second having mandibles | sub phlya myriapoda |
| this falls in the sub phyla myriapoda they have one pair of legs per segment and are carnivores Ex: centipedes | Class chiolpoda |
| these have two pairs of legs per segments and are herbivores ex: millepedes | class diplopoda |
| some have direct flight and wings attached to body while others dont. all have one pair of antennae, three pairs of appendages attached to thorax, and two pairs of wings if present along with spiracles examples: Insects | sub phyla hexapoda |
| two pairs of antennea with a calcified exoskeleton crushing mouth parts and bodies wit segments fused together examples: crabs, shrimps and lobsters | sub phlya crustacea |
| this group is extremely small with alimentary canal and a crown of cilia at the mouth | Phylum rotifera |
| this group is soft bodied, with bilateral coelomates, a muscular foot, dorsal visceral mass, a mantle and an open circulatory system with homocoel | Phylum mollusca |
| these have pseudocoelomates, alamentary canal without a circulatory system, nonsegmented body, and a tough cuticule for protection | phylum nematoda |
| paired jointed appendages, complex mouths, body in two or three parts, open circulatory system, exoskeleton of chition, and complex sensory system | Phylum Arthropoda |
| they have a serial homology, segments separated by septa, and a closed circulatory system | Phylum annelida |
| They are dorso ventrally flattened, with a gastrovascular cavity with branches, and water removal and gas exchange via diffusion | Phylum platyhemnthes |
| sessile suspension feeders, non motile, porous body with spicules, asymmetry, and two layers | Sponges |
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