Science Quiz / Classes of Invertebrate Phyla

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Can you name the Classes of Invertebrate Phyla?

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Forced Order
Score 0/47 Timer 15:00
Nemertea - No stylet on Probosis
Cnidaria - Stalked Jellies
Annelida - Hermaphroditic. Clitellum for sperm transfer
Chordates - Amphioxus
Cnidaria - Anenomes
Annelida -formerly own Phyla. U-shaped gut
Echinodermata - Sea Stars
Hemichordates - colonial
Echinodermata - Basket stars
Platyhelminthes - Ectoparasites
Rotifera - One Ovary
Mollusca - 3-6 pairs of ctenidia, 6-7 pairs of nephridia
Porifera - 6-rayed Spicules
Arthropoda - Chelicerata (spiders)
Arthropoda - extinct
Arthropoda - Mandibulata (crabs/lobsters)
Mollusca - 7 to 8 plates in mantle
Rotifera - Marine symbionts
Rotifera - Asexual
Mollusca - tusk shaped shells. Lack Ctenidia and Osphradia
Arthropoda - Chelicerata (horse shoe Crabs)
Ctenophora - No tentacles
Arthropoda - Chelicerata (sea spiders)
Mollusca - squid
Nemertea - Probosis with Stylet
Platyhelminthes - free living
Brachiopoda (hinged shell)
Annelida - parapodia for movment/gas exchange. Lethal Spawning events
Chordates - sea squirts
Echinodermata - Urchins
Echinodermata - Sea Cucumbers
Hemichordates - peanut worms
Platyhelminthes - tapeworms
Mollusca - vermiform shape
Porifera - CaCo3 spicules
Mollusca - snails. have operculum
Annelida - degenerate. Loss of segmentation
Echinodermata - Sea lillies
Porifera - Freshwater and Marine
Arthropoda - Mandibulata (Insects)
Cnidaria - Hydroids
Ctenophora - 2 tentacles
Mollusca - lack radula. Clams
Cnidaria - Box Jellies
Brachiopoda (non-hinged shell)
Platyhelminthes - Complex Life cycle/multiple hosts
Cndaria - True Jellies

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