4 phylum
what is the phylum that has a semi radial symmetry a nerve ring and a hard coated body with an endoskeleton
ECHINODERMATA
what is the most evolved phylum
Arthropoda
what are the evolutionary changes for Annelida
a closed circulatory system
sea cucumber
star fish
sea urchin
what is the first major characteristic
they are heterotrophs
What is the phylum that has an exoskeleton with appendages a brain with complex eyes and a open circulatory system
arthropoda
what is the the least evolved phylum
Echinodermata
what are the evolutionary changes for Arthropoda
appendages
a exoskeleton
what are the examples for Mollusca
octopus
snails
what is the 2nd major characteristic
they are eukaryotes
what is the phylum that has a soft body dome have shells a brain with complex eyes and symmetry as bilateral
mollusca
what is the 2nd most evolved phylum
Mollusca
what are the evolutionary changes for Echinodermata
a Endoskeleton
closed circulatory system
what are the examples for Annelida
feather duster worms
leaches
earth worms
what is the third major characteristic
Multicellular
what is the phylum that has a segmented body with many layers of tissue a brain with complex eyes and 1 way digestive system with openings
Annelida
what is the 2nd least evolved phylum
Annelida
what are the evolutionary changes for Mollusca
complex eyes
open Circulatorysystem
what are the examples for Arthropoda
crustaceans
butterflies
spiders