flatworm
Thin bilateral creature
A flatworm is a soft-bodied invertebrate with a flattened shape, lacking a body cavity and circulatory system.
Flatworms include parasitic species like tapeworms and flukes, as well as free-living forms like planaria.
Their simple structure—no specialized respiratory organs, absorbing oxygen through their skin—makes them a common subject in biology classes.
Segmented intestinal parasite
- flukeChance stroke of luck
- trematodeParasitic flatworm class
- hostOne receiving guests
- infectionPathogen invasion causing illness
infestation · larvae · life-cycle · endoparasite · cyst · zoonotic · hooklets
Regenerative freshwater flatworm
- bilateralInvolving two parties
- mesodermEmbryonic tissue forming muscles
- ectodermEmbryo's outer cell layer
- endodermInnermost embryonic tissue layer
pharynx · eyespots · auricles · dorsoventral · ganglia · protonephridia · epidermis · parenchyma
Segmented worm phylum member
- nematodeThreadlike parasitic worm
- molluskSoft-bodied invertebrate, often shelled
- cnidarianStinging aquatic invertebrate
- spongeAbsorbent cleaning material
arthropod · echinoderm · roundworm · leech · polychaete · marine · freshwater · terrestrial
Growing back again
- fissionNuclear breakup releasing energy
- asexualWithout erotic attraction
- pluripotentAble to become many cell types
- fragmentationBreaking into smaller pieces
bisection · totipotent · decapitation · polarity · anterior · posterior
tapeworm
Segmented intestinal parasite
infection · infestation · larvae · life-cycle · endoparasite · cyst · zoonotic · hooklets
planaria
Regenerative freshwater flatworm
- bilateralInvolving two parties
- mesodermEmbryonic tissue forming muscles
- ectodermEmbryo's outer cell layer
endoderm · pharynx · eyespots · auricles · dorsoventral · ganglia · protonephridia · epidermis · parenchyma · soft-bodied
annelid
Segmented worm phylum member
- nematodeThreadlike parasitic worm
- molluskSoft-bodied invertebrate, often shelled
- cnidarianStinging aquatic invertebrate
sponge · arthropod · echinoderm · roundworm · leech · polychaete · marine · freshwater · terrestrial · free-living
regrowth
Growing back again
- fissionNuclear breakup releasing energy
- asexualWithout erotic attraction
- pluripotentAble to become many cell types
fragmentation · bisection · totipotent · decapitation · polarity · anterior · posterior
- flatwormstapeworm, tapeworms, fluke, flukes, trematode
- living thingsplants, animals, animal, creature, birds
- invertebratesinvertebrate, arthropod, arthropods, mollusk, crustacean
- freshwater lifecatfish, trout, bass, salmon, frog
- parasitestapeworm, roundworm, pinworm, hookworm, fleas
- wormsearthworms, nightcrawler, roundworms, tapeworms, hookworms