AP Bio Ch33- Phyla terms
Terms
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- sessile
- immobile, does not control own movement
- spongocoel
- central cavity in porifera, water flows into
- osculum
- top hole in porifera, water flows out of
- choanocytes
- collar cells in spongocoel, trap food w/ flagella
- mesohyl
- separates cell layers in porifera
- amoebocytes
- traveling cells in porifera, bring nutrients to whole body, secrete hard skeleton
- gastrovascular cavity
- in cnidaria, ctenophora, and platyhelminthes; for digestion, 'incomplete' digestive tract
- polyps
- attach to a medium and tentacles extend upward; coral and hydras, cnideria
- medusas
- flattened, mouth and tentacles downward, drifts for movement; cnideria
- cnidocytes
- on tentacles of cnideria
- nematocytes
- stinging cells in cnidocytes of cnideria
- pharynx
- mouth and anus of platyhelminthes
- flame cells
- regulate gas exchange and excrete nitrogenous waste in platyhelminthes
- blood fluke
- parasite in platyhelminthes, alternates between mature for in human and asexual larvae form in snail hosts
- tapeworms
- parasite in platyhelminthes, suckers and hook on head attach to digestive tract of vertebrate host, long series of sex organs line posterior end, absord food particles
- lophophore
- characterizes lophophore phyla, U shaped or circular fold in body that is ciliated to bring food particles to mouth
- visceral mass
- internal organs in mollusca
- mantle and cavity
- secretes shell, covers visceral mass, water-filled in mollusca
- radula
- toungue like appendages for feeding in mollusca
- trochophore larvae
- ciliated larval stage in mollusca and annelida
- gastropodia
- class of snails and slugs in mollusca, "stomach foot," torsion
- bivalvia
- class of clams, oysters, mussels, scallops in mollusca; two hinged shells
- cephalopodia
- class of squids and octopuses in mollusca, "head foot,"
- polychaete
- class in annelida, setae and parapodia, marine
- leeches
- class in annelida
- exoskeleton, cuticle
- hard covering on arthropoda, protein and chitin, protection, attached to muscles, water proof, molted
- trilobites
- extinct grouping of arthropoda
- chelicerae
- grouping of arthropoda; horseshoe crabs, scorpions, spiders; clawlike feeding appendages, no sensory antennae, simple eyes
- uniramians
- grouping in arthropoda; insects, centi/milli pedes; jawlike mandibles for feeding, 1 pair sensory antennae, compound and simple eyes, uniramous (unbranched) feet
- crustaceans
- grouping in arthropoda; crabs, lobsters, shrimps, barnacles; 2 pairs antennae, compound and simple eyes, biramous (branched) feet