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87 Cards in this Set
- Front
- Back
mollusc classes
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polyplacophora
bivalva gastropoda cephalopoda |
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mollusc gut
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complete
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mollusc circulatory system
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open
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ctenidia
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mollusc gills in mantle cavity
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osphradium
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chemosensory organs in molluscs
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radula
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mollusc toothed feeding tongue
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mollusc shell
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secreted by epidermal layer (mantle)
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mollusc 6 defining traits
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shell secreted by mantle
ciliated ventral foot radula metanephria ctenidia osphradium |
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polyplacophora are...
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chitons
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bivalva are...
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scallops, oysters, clams
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gastropoda are...
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snails and slugs
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cephalopoda are...
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octopus and squids
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polyplacophora feed when
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this species only feeds when fully submerged
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chitons have what food diet
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herbivorous
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Bivalves eat how
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filter feeding
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siphon
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tubular part of mantle communicating with outside in bivalves
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mollusc blood has what oxygen binding pigment
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hemocyanin
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mollusc with no radula
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from this phylum BIVALVES are the only ones with no radula
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Bivalve digestion (4)
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1 mucous string on crystalline style
2 crystalline style spun around cilia 3 mucous string flings food on gastric shield 4 from gastric shield goes to digestive diverticula |
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Bivalves have no...(2)
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they have no
Radula sensory structures |
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Bivalva subclasses
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protobranchia
lamellibranchia |
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protobranchia characterizing traits (3)
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live in soft sediment
2 gills - 2 demibranchs per gill deposit feeder |
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Lamellibranchia animals
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cockles and clams
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lamellibranchia characterizing traits (2)
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gills used for food acquisition and gas exchange
attached to substrate by BYSSAL THREAD |
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Gastropoda types of feeding
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herbivore, carnivore, scavenger, filter feeder, deposit feeder
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Gastropoda don't have (3)
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kidney
1 heart auricle 1 gill |
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Gastropoda characterizing traits (6)
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many food acquisition types
loss of kidney, auricle, and gill torsion operculum eye spots and tentacles well developed CEPHALIZED head |
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Gastropoda subclasses (3)
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prosobranchia
opistobranchia pulmonata |
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prosobranchia animals
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aquatic snakes
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opistobranchia animals
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sea slugs, teropods
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pulmonata animals
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land snails and slugs
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Prosobranchia orders (2)
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archaegastropoda
neogastropoda |
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archaegastropoda animals
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abalone, limpets
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prosobranchia habitat
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clear, clean water
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prosobranchia characterizing traits (4)
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clear clean habitat, holes in shell, herbivore, 2 gills
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Neogastropoda characterizing traits (2)
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1 gill
1 siphon |
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prosobranchia cone snail specialness
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this animal exudes conotoxin, which is being developed as a pharmaceutical for pain relief
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Opistobranchia characterizing traits (2)
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exterior gills
shell reduction/ loss |
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Opistobranchia orders (2)
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nudibranch
pteropods |
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nudibranch characterizing traits (3)
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anal gill plume
rhinophore cerata |
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cerata
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take unfired nematocysts and put into their own tissue to fire themselves
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rhinophore
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sensory protuberances on front of nudibranchs
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Pteropod animals
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perlagic snails
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pteropod characterizing trait (1)
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2 parapodia (modified feet)
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Pulmonata characterizing traits (2)
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small/missing shells
large mantle cavity |
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Cephalopoda characterizing traits (3)
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1- carnivorous raptorial feeders
2- foot modified into arms and tentacles 3- radula modified into beak |
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cephalopoda subclasses (2)
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coleoidea
sepioidea |
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nautiloidea animals
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nautilus
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nautiloidea defining characteristic (1)
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external shell
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coleoidea defining characteristics (2)
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fish-like
reduced shell |
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sepioidea animal
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cuttlefish
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tenthoidea animals
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squid
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tenthoidea defining characteristics (2)
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streamline body
reduced shell parts |
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octipoda defining characteristics (3)
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8 arms
no shell benthic |
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gastropoda circulation
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closed
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gastropoda heart
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3 hearts - 2 branchial 1 systematic
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branchial heart
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in gastropods
blood through gills |
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systematic heart
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in gastropods
blood to body (besides gills) |
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oxygen binding pigment in gastropods
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hemocyanin
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gastropoda locomotion
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burst and sustained speed
sepiods = fin swim octopi - swim and walk |
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chromatiphores
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in gastropoda - affect color through muscle control
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gastropoda eyes
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some are convergent with vertebrate eyes
lens,cornea, iris, retina |
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pseudomorph
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gastropoda trait - throw ink image of self behind themselves when running from predators
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Annelid animal type
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worms basically
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annelid defining characteristics (5)
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vermiform
metamerism metanephrium nephrostome septa |
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veriform
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worm-like
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metamerism
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identical repeating segments
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metanephrium in annelids used for
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water balance and excretion
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nephrostome
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sucks in coelomic fluid from previous segment
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septa
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mesodermal sheets of tissue creating segments
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annelid circulatory system
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closed
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annelid classes (2)
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polychaeta
clitellata |
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annelid forms of locomotion
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errant
swimming free moving crawling paripodia sinusoidal contractions of long muscles |
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carnivorous annelid form of motion
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errant
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deposit feeding annelid form of motion
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burrow
sedentary |
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filter feeding annelid form of motion
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burrow
some sedentary |
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annelid reproduction
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epitoky
let out highly reproductive epotokes |
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polychaeta animals
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marine worm
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clitellata animals
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leaches
earthworms |
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clitellata subclass (1)
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oligochaeta
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oligochaeta animals
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earth worms
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clitellata don't have
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sensory structures on prostomium
porapodia |
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clitellata defining characteristics (3)
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have clitellum but also are hermaphrodites
no sensory structures on prostomium no parapodia |
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Nematode defining characteristics (7)
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eutely
unsegmented collagenous cuticle only longitudinal muscles sinusoidal contractions pseudocoelom circulatory system dioecious |
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eutely
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constant number of cells
nematodes |
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nematode gut
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complete
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caenorhabditis elegans
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nematode used in research
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