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Batoidea: Quiz


Question 1:
What is the subclassis of Batoidea?

Question 2: The largest of rays, including the giant ________.
ChordateElasmobranchiiManta rayBatoidea

Question 3: Most batoids have developed heavy, rounded teeth for crushing the shells of bottom-dwelling species such as snails, clams, oysters, ________, and some fish, depending on the species.

Question 4: Only a few species, like ________, live in the open sea, and only a few live in freshwater.
BatoideaChordateManta rayElasmobranchii

Question 5: [2] Batoid gill slits lie under the ________ on the underside, whereas a shark's are on the sides of the head.
FishFish anatomyPrehistoric fishPelagic fish

Question 6: The ________ Sclerorhynchoidea are basal or incertae sedis; they show features of the Rajiformes but have shouts resembling those of sawfishes.
DinosaurGeologic time scaleCretaceousMesozoic

Question 7: Most batoids have five ventral slot-like body openings called gill slits that lead from the ________, but the Hexatrygonidae have six.
Fish anatomyFishDemersal fishGill

Question 8: Batoids include stingrays, skates, electric rays, guitarfishes and ________.
SawfishChimaeraSharkBullhead shark

Question 9: The current is strong enough to stun humans, and the ________ and Romans used these fish to treat ailments such as headaches.
Alexander the GreatAncient GreeceClassical antiquityRoman Greece

Question 10: Sawfishes are shark-like in form, having tails used for swimming and smaller ________ than most batoids.
GillPrehistoric fishFish anatomyPelagic fish


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