Lab 8 Flashcards
What does bivalve mean
two valves
what does gastropoda mean
Stomach foot
What does cephalopoda mean
Head foot
What does polyplacophora mean
Many plates
What does polychaeta mean
many hairs
Example of a clitellata
Leech
Example of a cephalopoda
cuttlefish
Example of a gatropoda
Nudibranch
Example of a polychaeta
sea mouse
Example of a polypacophora
chiton
3 body regions of a mollusca
VIsceral mass, foot, mantle
Phylum of a fan worm
Annelida
Class for organisms that use radula
Gastropoda
What is a radula
Scissor tounge
What is the corp
A large digestive organ in earth worm
Where is the pharynx on an earth worm
at the head almost
Classes under phylum Molusca
Bivalvia
Polyplacophora
Gatropoda
Cephalopoda
Classes under Phylum Annelida
Polychaeta
Clitellata
Phylum Molusca Classification
Soft bodied, some have a shell
Bilateral symmetry
3 body regions
3 Body regions of a mollusc
Foot (locomotion)
Visceral mass (Digestive and circulatory organs)
Mantle (tissue that secretes the shell.)
Class Bivalvia Classification
Shell with two halves
Mantle
(Mussels, Clams, Scallops, Oysters)
Class Polyplacophora Classification
Primitive marine organisms
Shell with 8 overlapping plates
foot on ventral side to suction to rocks
(Chitions)
Class Gastropoda Classification
Largest and most diverse mollusks
Some adults retain shells (snails)
(Snails, Slugs, Nudibranchs)
What is unique about snails
Slime gland is used to move.
Mouth contains radula that scrapes and grinds (Also slugs)
What is unique about slugs
Need to stay moist
Nocternal
What is unique about nudibranchs
They use camoflage or bright colors
Class Cephalopoda Classification
Most advanced mollusks
Modified foot (tentacles)
Highly developed eyes
(Squids, octopuses, cuttlefish)
Phylum Annelida Classification
Segmented worms
True body cavity
Class polychaeta Classification
Thousands per square meter.
Lots of “hairs”
(Sea mouse, Feather duster, Polychaeta worm)
Class clitellata (subclass oligocaeta) Classification
Earth worms
Clitellum for reproduction (hermaphroditic)
Class clitellata
Sub class hirudinea
Classification
Leeches Mostly freshwater Not parasites (predators because of blood sucking) Anterior and posterior sucker (can eat 3x their body weight) Hermaphroditic Cannot self fertilize
