Biol1604 Practical 1

neck of the scolex in trematoda is the

strobila

lines of the scolex in trematoda is the

proglottid

marine and freshwater, body compressed two shells, secondary filter feeder

bivalvia

marine predators, foot modified into tentacles and arms, well-developed eyes

cephalopoda

marine, freshwater, and terrestrial.
foot developed
shell univalve
Herbivores, some carnivores

gastropoda

Marine herbivores
Broad foot
Shell consists of 7-8 articulating plates

polyplacophora

operculum

gill cover

operculum

gill cover

Marine, freshwater and terrestrial annelids, including earthworms
Monoecious

oligochaeta

Marine annelids
Dioecious
Patapodia

polychaeta

Marine, fresh water, and terrestrial
No setae
No, septa

hirudinea

Acoelomate

no body cavity

Coelomate

complete body cavity

Pseudocoelomate

false body cavity

Phylums with Acoelomate

porifera, cnidaria, platyhelminthes

Phylum with psuedocoelomate

nematoda

Phylums with coelomate

mollusca, annelida

Mostly free-living, carnivorous, aquatic forms
cilated epidermis

turbellaria

parasitic with wide-range of invertebrate and vertebrate hosts
Suckers for attachment to host

cestoda

parasitic in most vertebrate hosts
Complex lifecycle with multiple hosts
Obtains food using microtriches

trematoda

The oral tip surrounded by tentacles in hydrozoas

hypostome

Mobile cell
Totipotent

amoebocyte

flagellated
Create the current in the sponge

choanocyte

make the pinacoderm, the outer later of the sponge

pinacocyte

both medusa and polyp stages
Mainly Marine
Mostly colonial polyps

hydrozoa

Reduced polyp stage
Marine Coastal waters

scyphozoa

Medusa stage ABSENT
Marine coastal waters
Solitary or colonial polyps

anthozoa

classes of Phylum Cnidaria: H S A

hydrozoa, scyphozoa, anthozoa

feeding polyp on hydrozoan Obelia

hydranth

reproductive polyp on hydrozoan Obelia

gonangium

Classes of Phylum Platyhelminthes: TTC

turbellaria, trematoda, cestoda

Classes of Phylum Mollusca: PGBC

polyplacophora, gastropoda, bivalvia, cephalopoda

Classes of Phylum Annelida: OHP

oligochaeta, hirudinea, polychaeta