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21 Cards in this Set
- Front
- Back
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Mollusk are the the... and have ...... + species.
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3rd largest phyla, and 50,000
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What is the Visceral
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Mass cavity=Internal organs
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What is the mantle
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layer of tissue which produces shell.
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Diet of mollusks
size Habitat |
No parasites
mm to giant squid= archinteuthis >40 feet aquatic, most tererestrial |
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Digestion, radula
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toothed toughable
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Style
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grinding store embedded with diserine enzymes
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gastric shield
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surface the syle grinds against.
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Circulatory of mollusks
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open circular system except in october squid
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blood with .... ...... which are
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respiratory pigments which are protein with mental core which carries o2 in the blood.
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Hemocoel
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large control chamber where blood and most organs are located.
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hemoglobie o2= no 02=
Hemo cyabub o2= no 02= |
red,
purple-blue green clear |
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gill=
nerous= |
ctendium
highly variable |
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clam osyter have
octopus squid intelligence and eyes |
ganglia- no real brain only touch
large brain- dog level or higher intelligence large eyes with color vision and human level or better vision |
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Reproductiion of mollusks
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all oviparous
Trocophore larvae same as annelida |
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Classes of mollusks
polyplacophora= Pelecypoda Gastropoda= Cephalopoda= |
Chitons
aka Bivalaria = clam/oyster Snail/snug octopus/squid |
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polyplacophora=
shells= |
slug liek body with an 8 part shell
valve |
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Pelecypoda
1) 2) 3) 4) |
All aqutatic
99% species are filterfeeders, use gill as net no head no radula |
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Dorsal
abductor muscle siphpons |
Hinge ligament made of resilum, pulls shell open
pulls shell closed to bring in h20 for respiration and filter feeding. |
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movemnt
99% Scallops move by Muscles |
motile
crawl/burrow using foot swimming by clapping stall attach themselves to rock using byssal threads |
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Reproduction
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all oviparous, seperate sexes. broadcast fertilizers
only in fresh water muscles of the family |
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Glochidia
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microscopic baby muscles with toasted shell
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