level of organisation
organ system
symmetry
bilateral
germ layers
triploblastic
coelom
eucoelomate
locomotory organ in aquatic annelids
parapodia
example of aquatic annelid
nereis
is circulatory system open or closed
closed
organ for excretion and osmoregulation
nephridia
unisexual example
nereis
bisexual examples
earthworms
leeches
is reproduction sexual or asexual
sexual only
examples
nereis
pheretima
hirudinaria
pheretima common name
earthworm
hirudinaria common name
blood sucking leech