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body plan
bilateral
tissue
triploblastic, acoelomate
acoelomate
no body cavity
Protostome or Deuterostome?
protostome (but incomplete digest
cephalization
simple, nerve tissues and sensory organs in head
digestive system
- mouth is also anus
— ingested food goes into rudimentary digestive system
— food is digested extracellularly then absorbed into cells of gut
— waste products are released through pores in the epidermis
excretory system
-- a network of tubules running along the periphery of the animal
— have flame cells with cilia that propel waste fluid out of the body through pores
nervous system
two nerve cord running the length of the body, two cerebral ganglia for sensing light and chemicals
how is gas exchanged in platyhelminthes
through the epidermis
how are nutrients transported in platyhelminthes
distributed through gap junctions
what systems do platyhelminthes lack?
circulatory and respiratory
reproduction type
monoecious, internal fertilization where eggs are produced; most sexually but some asexual
platyhelminthes have what kind of digestive system
incomplete
rudimentary digestive system
food digested in intestines
