Phylum annelida Flashcards
general characteristics of phylum Annelida
aquatic ie marine or fresh, terrestrial, free-living sometimes parasitic, the organ level, coelomate, triploblastic, they are also metamerically symmetry
what is different about their body?
they have segmented body that is metamerically symmetrical
what helps them locomote and, swim for in aquatics who is it found in
locomotion is thro longitudinal and circular muscles, and animals that is aquatic arthropods ‘neris’ have parapodia that helps it swim
what helps them osmoregulate and for excretion
nephridia
who among this phylum are monoecious and who are dioecious
nereis is dioecious whereas earthworms and leeches are monoecious
what are the examples
nereis, pheretima [earthworm], and hirudinaria[blood sucking leech]
how is their nervous system
it has a pair of ganglion and nervechord
