Biology - Unit 2: Protostomes
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104 Terms
Porifera
Sponges
Ctenophora
Ctenophores
Cnidaria
Jellyfish, sea anemones, hydras, box jelly fish
Rotifera
Rotifer
Platyhelminthes
Flatworms
Annelida
Annelids
Mollusca
Molluscs
Nematoda
Round worms
Tardigrada
Tardigrades; water bears
Onychophora
Velvet worms
Arthropoda
Arthropods
Who am I?
Demospongiae
Who am I?
Hexactinellida
Choanocytes
Line the interior of sponges
Contain a central flagellum, or cilium, surrounded by a collar of microvilli
Make up the choanoderm
Amebocyte
Motile cells found in sponges; have varied functions
Ostium
Pores on the body that allow water to enter the sponge
Mesohyl
Gelatinous matrix within a sponge
Spicule
Stiff spike of silica or calcium carbonate that provides structural support in the body of many sponges
What am I?
Scyphozoa
What am I?
Hydrozoa
What am I?
Anthozoa
What am I?
Cubozoa
Nematocyst
Barbed Organelle
Cnidocyte
Stinging cell
Hydrazoa (Class)
Hydrazoans, siphonophores; polyp dominates
Scyphozoa (Class)
True jellyfish; medusa dominates
Cubozoa (Class)
Box jellies; medusa dominates
Anthozoa (Class)
Sea anemones, corals, sea pens; only polyp
Medusa
The free-floating stage in the life cycle of some cnidarians
Polyp
The immotile (sessile) stage in the life cycle of some cnidarians
Cilia
Filamentous projections; used to move the cell as well as to circulate fluid or particles around the surface of a stationary cell
Lophotrochozoans (Lineage)
Protostomes that grow by extending their skeletons; have a lophophore and/or trochophore
Ecdysozoans (Lineage)
Protostomes that grow by shedding their exoskeleton or cuticle
Trochophore
ciliated larvae
Lophophore
specialized feeding structure
What am I?
Rotifera (Phylum)
Corona
Ring of cilia around the mouth
What am I?
Turbellaria/Planaria
What am I?
Cestoda/Tapeworm
What am I?
Trematoda/Fluke
Turbellaria: Parasitic?
No
Cestoda: Parasitic?
Yes
Trematoda: Parasitic?
Yes?
What am I?
Polychaetes/Marine worm
What am I?
Oligochaetes/Earth worm
What am I?
Hirudinea/Leech
What am I?
Polyplacophora/Chiton
What am I?
Bivalvia/Bivalves
What am I?
Gastropoda/Snails & slugs
What am I?
Cephalopoda/Octopus, squid, nautiluses & cuttlefish
Polyplacophora: Radula?
Yes
Bivalvia: Radula?
No
Gastropoda: Radula?
Yes
Cephalopoda: Radula?
Yes
Scolex
Head of a tapeworm that has hooks, suckers, or both
Proglottid
Segment of a tapeworm
Foot
Of a mollusc: a muscular appendage, used for movements such as crawling and/or burrowing into sediment
Mantle
Of a mollusc: the thick outer tissue that protects the visceral mass and may secrete a calcium carbonate shell
Visceral mass
Of a mollusc: contains most of the internal organs and external gill
Chaetae
Bristle-like extensions found in some annelids
Radula
A rasping feeding appendage in some molluscs
Cloaca
a body cavity into which the urinary, gastrointestinal, and reproductive tracts all empty
What am I?
Nematoda/Roundworm
What am I?
Onychophora/Velvet worm
What am I?
Tardigrada/Water bears
What am I?
Trilobite
What am I?
Diplopoda/Millipede
What am I?
Chilopoda/Centipede
What am I?
Araeneae/Spider
What am I?
Xiposura/Horseshoe crab
What am I?
Acari/Ticks & mites
What am I?
Scropion
What am I?
Malacostraca/Crabs & lobsters
What am I?
Branchiopoda/Brine shrimp
What am I?
Remipedia
What am I?
Maxillopoda/Barnacle
A
Antenna
B
Spiracle
C
Head
D
Thorax
E
Abdomen
F
Ovipositor
A
Telson
B
Swimmerets
C
Walking legs
D
Cheliped
E
Cephalothorax
F
Abdomen
A
Lophotrochozoa
B
Rotifera
C
Platyhelminthes
D
Annelida
E
Mollusca
G
Ecdysozoa
H
Nematoda
I
Tardigrada
J
Onychophora
K
Arthropoda
L
Protostomes
Tagmata
Prominent body regions in arthropods