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Download Cephalopods: Squid, Octopus, Cuttlefish, and Nautilus
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Ms. Bruno Cephalopods Name _________________________________________________ Marine Biology Date _____________ Per _________ Cephalopods: Squid, Octopus, Cuttlefish, and Nautilus General Information: Kingdom: ____________________ Phylum: _________________ Class: ____________________________ Appeared millions of years before: The most _____________ __________________ mollusk Colossal Squid: Cephalopod Characteristics: 1. Cephalopod means _________________________ 2. ______________ circulatory system 3. __________ modified to form flexible ________and _________________ 4. Most have excellent _______________________ (__________________________) 5. All species except __________________ have human-like ____________ complete with a ______________________________________ Colossal squid has __________________ size eyes Defense Mechanism: Ink Sac: Release _________ when threatened Quickly departs with ______ as a ____________ 6. Contain a well-developed __________________ 7. Are not covered by a _________________, unlike other mollusks _______________ forms their tough ___________ covering Ms. Bruno Cephalopods Marine Biology Reproduction: Sexes are ____________________ Males have on modified _________, (______________________) for sperm transfer Sperm are enclosed in _________________ called ___________________________ Fertilization is _____________________ Male uses arm to take ___________ from his own ______________ cavity and insert into ________________ mantle cavity Feeding Patterns: Feed on: _________________________________________ Beak-like _________ and radula tear prey into pieces Octopus and cuttlefish have ______________ in their ____________ Pull apart ___________ with suckers, __________ shell open with ___________ Secrete ____________ that paralyzes prey and begins ________________ of tissue The Squid: Move through the ocean using a ________ of water forced out of the body by a ____________ The foot forms the _____________ The upper end of the ____________ is extended into a pair of triangular ___________ Can move very quickly (__________ mph) Vampire Squid Info: Ms. Bruno Cephalopods Label the following diagram of squid anatomy: The Octopus: Characteristics Have _______ arms all equal in length Rows of ______________ from base to tip (________ per tentacle!) Compact body with no _____________ Body is extremely ___________________ and streamlined when _________________ (can fit through a hole the size of a ___________!) ____________ feeders on bivalves, crabs and ____________ Get around by swimming, _____________ or ______________________. Some even __________ on two legs! Incredibly ___________________: have been know to escape fish tanks and climb aboard ________________ _______________ and open holds to feed on crabs Marine Biology Ms. Bruno Cephalopods Marine Biology Octopus Defense: Squirt _________ to distract predators Masters of _________________: can change __________ and ________________ of skin Can remove a _________ to confuse predators- it will later grow back Types of Octopuses: Giant _____________ Octopus is the ________________ octopus in the world. Feeds on _____________ _____________________ Octopus is highly poisonous and very tiny! ________________ octopus hides in coconut shells! The Cuttlefish: Masters at ________________________ Bury in the _________ to hide Contain an internal __________ called the _______________, which is filled with ______ and aids in _____________________ Often give to pet _________ as a source of calcium The Chambered Nautilus: Live at depths of up to _________ feet __________ are more primitive, they have no _________ Up to 90 ________________ that retract, with no ______________ Only Cephalopod with an external __________ Living ___________! Have survived ___________ of years virtually unchanged.
