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INVERTEBRATES (Molluscs (3 types (gastropods (herbivore and have a shell,…
INVERTEBRATES
Molluscs
Majority are marine
Soft and not divided into rings
Have a muscular foot that carries out many functions
3 types
gastropods
herbivore and have a shell
they use the muscular foot to move around
Bivalves
Black shell made up of two halves, called valves
water leaving food particles
cephalopods
carnivore
have a serie of tentacles
arthropods
myriapods
crustaceans
insects
arachnids
Body plan symmetry:
asymmetry
bilateral
radial
Porifera and cnidarians
very simple aquatic organisms
porifera
feed by filtration
sponge can have calcerous spicules
cnidarians
jellyfish
umbrella-shaped
pollyps
sac-like body
annelids
soft and long
body is divided into rings
hermaphrodites
Echinoderms
Radial symmetry
Endoskeleton
Are the 95% of all the animals in the Earth
Without backbone