Porifera & Cnidarians
What are the animals in these three phylum generally called?
Worms
what kind of development is seen in arthropods ?
indirect
name some parasites of platy and aschelminthes
tapeworm liver fluke round worm filarial worm
What is the system of fluid-filled tubes in an echinodermata called?
the water vascular system
what does annulus mean in latin
little rings
which arthropods are economically important
honey bee silk moth laccifer
the empty cavity of poriferans are called
spogocoel
which is the excretory organ in annelids?
Nephridia
What are the examples of echinoderms?
sea stars, sea urchins, and sea cucumbers
what is the term used when sexes are seperate
dioecious
which is the feeding organ of mollusca
Radulla