sharks and fish quiz
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| what characteristics are in the class of agnatha and give examples | jawless fish,lampreys, hangfish
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| what characteristics are in the class of chondricthyes and give ex. | jaws, paired fins, sharks skates and rays
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| characteristics of class of osteicthyes and give example | bony fish, most have swim bladder, rayed fins
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| what kind of skeleton do osteichythes have and what kind of skeleton do chondrichthes have | oste.. bony skeleton and chond.. cartilaginous skeleton
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| who has an operculm? what does the other group have? | osteichythes have operculum, chondrich.. have 5-7 naked gill slits
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| what are the pectoral and dorsal fins like in both classes | osteichythes have flexible ones and chondrichthes are inflexible
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| what does each class have for buoyancy | bony fish have swim bladder and chondrichthyes have liver
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| what kind of scales do bony fish have | ctenoid, cycloid, ganoid (finger nail like)
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| what kind of scales do cartilaginous fish have | placoid scales= minerature teeth
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| who has ampullae of lorenzini and what is it | cartilaginous fish and it pcks up electrical signals
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| what are the teeth like of both classes | bony fish have single row of teeth that arnt replaceable and carilage fish have rows of teeth that shed and replace
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| fertalization of classes | external for bony fish and internale for cartilage fish because males have claspers
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| development of bony fish and cartilage fish | bony is external and cartialge is 30% external in leathery eggs and 70% live born
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| what do you call the young for both class | bony fish is fry and cartilaginous fish is pup
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| who is larger | cartilage fish
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| mouth position in classes which has variation and which is in the same place | mouth below snout in most cartilogous fish and more vvariation with bony fish
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| cadal fin in bony fish are.. | homocercal: tails with dorsal and ventral parts nearly equal
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| what are types of fins in bony fish | rounded fork and lunate
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| what are caudal fins like in sharks | heterocercal- dorsal love longer than ventral- tail is slower moving
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| which class can has the characteristic that lower jaw can be hyper extended | cartiligous fish
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| anal fins in each class? | present in bony and lacking in cartilage
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| what is reproduction like for both classes | bony fish reproduce in larger number and shorter time to reach sexual maturity, cartiligous fish reproduce in smaller numbers and takes longer time to reach maturity
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| what is tonic immobility | if you lie shark on their back they are in sleep like state
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| how can you tell primitive sharks from advanced oness | sharks with more than 5 sets of gills are primitive
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| bottom dweller shark tails are for what instead of spead | stability
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| three ways ocean populations are plummiting | harvesting the sea with commerical fishing, predators become prey, global warming
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| how many sharks are killed per year and how many humans by sharks | 15 million and 6
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| how long have chondrichthes been around | 100 million years unchanged
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| what do sharks eat give example | plankton basking adn whale shrks, bottom feeders carper sharks, ultimate predator, great white
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| how many species of shark | 350
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| lack of swim bladder is a __ advantage | hunting
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| what kind of body do sharks have | fusiform (torpedo shaped_ with longer upper tail fin lobe
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| what are some identifying characteristics of bony fish | nerve cord, gills, notochord, post and alal tail, backbone
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| the class osteichthes includes the largest number of living species of all scientific classes of vertebrates, more than __ species | 2300
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| osteichthes account fore about ___% of all fish species | 96
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| more than how many species of bony fish | 23500
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| primitive fishes date back to the __ period which is about ___ years ago | cambrian, 550 milliion
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| what kind of body do bony fish have | streamlined, rounded and tapering at both ends
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| why do bony fish have streamlined body | reduces drag and requires a minimum amount of energy to swim
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| bony fish deviate from the fusiform body shape in three directions: | compression, depression, and elongation
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| a laterally compressed body shape is common in bony fishes that live in | dense cover or within coral reefs
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| depressed body shape is common in | bottom dwelling bony fish
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| elongated body shapes are common in | open ocean fishes and eels
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| fins help | stabilie or propel the fish in the water
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| the caudal fin is responsible for.. | propulsion
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| most bony fish have a small pair of | gill openings
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| oxygenated air in bony fish enters through the fishes mouth and is forced over the __ and exitts behind the __ | gills, operculum
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| some surface feeding fish have mouths that angle __ like the __ | upwards, tarpon
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| butterfly fishes have what kind of mouth and why | thin snouts to get food in small cracks
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| bony fish have an inner ear for | equilibrium, detecting acceleration, and hearing
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| there is no __ for the ear | external opening
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| sound in water travels more than __ times faster than the speed of spound in air | 4
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| lateral lines sense what | vibrations
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| the lateral line consits of a series of | series of fluid filled canals below skin of head and along sides of body
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| __ cells in the nasal sac detect tiny amounts of __ in solution | olfactory, chemicals
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| sense of smell is generally highly or hardly developed | highly
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| cleaner wrasse is an example of | symbiotic relationshi, cleaners that eat debris and parasites from skin of larger fish
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| remoras ecommonly attach themselves to | sharks and other fish using a modified dorsal fin and eat scraps left over from their hosts
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| nony fishes may have sybiotic relationship with ___. give example | nonfish species - clownfish and sea anenomes, which protect them
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| skeleton of bony fish provides | spinal cord, notochord, skull
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