Shark CuriositiesOnline version Know some curiosities about sharks by CLARISSA MAYTE RODRIGUEZ CARDONA 1 Do sharks have bones? a Partial bones in fins b Only their jaws are bones c No; they have cartilage skeletons. d Yes, they have bones throughout 2 What sensory organ helps sharks detect electric fields? a Ampullae of Lorenzini b Optic nerves c Olfactory bulbs d Lateral line system 3 How do most sharks give birth? a Oviparous (egg-laying) b Viviparous with placenta c Ovoviviparous d Eggs laid and hatched outside the body 4 What is unique about a shark’s skin? a Placoid scales (dermal denticles) b Feather-like scales c Hair-like filaments d Bone plates like armor 5 What do great white sharks primarily feed on? a Seals and sea lions b Plankton only c Fish only d Squid only 6 How long can some sharks go without eating? a One year b Several months c A few days d One week 7 Do all sharks need to keep swimming to breathe? a They cannot breathe underwater b No; some must swim to breathe, others can rest. c Yes, every shark must swim constantly d Sharks breathe air like fish 8 Which shark is known for its speed? a Bull shark b Great white shark c Hammerhead shark d Shortfin mako shark 9 Where are most shark species found? a In oceans worldwide b Only near polar regions c Only in tropical seas d Only in freshwater rivers
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