Class Cephalopoda “head footed” Shell in squid and octopus absent or vestigial (serves no obvious purpose) Jet propulsion Ink sac for defense Foot modified.

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Presentation transcript:

Class Cephalopoda “head footed” Shell in squid and octopus absent or vestigial (serves no obvious purpose) Jet propulsion Ink sac for defense Foot modified into arms and tentacles Marine All predators Roughly 700 living species 1

Links for Cephalopoda.. please pay attention most of the test ?s come from the video info nautilus giant octopus intelligent octopus cephalopod masters of camo re=related invisible octopus..slowed down re=related 8v1mxpR0&feature=related meet the cuttlefish 8v1mxpR0&feature=related cuttlefish mating rituals

Squid 3 Dorsal Ventral Posterior surface Right Left

Squid 4 FinFin ArmArm Funnel (siphon) EyeEye TentacleTentacle CollarCollar

Squid 5 Shell (Pen) Ctenidium (gills) FunnelFunnel SystemicheartSystemicheart Branchial heart

Squid Male 6 TestisTestis Hectocotylous arm PenisPenis

Squid Female 7 Ovary with eggs Nidamental glands Oviducal gland Oviducal opening

Squid

Octopus Eight arms with suckers Crawl or eject water from siphon Change skin color – chromatophores Most intelligent invertebrate 9

WOW, Giant Octopus! 10 wAqhThd_EQ

Intelligent Octopus 11 be.com/watch?v=b Be2KaRuI80 be.com/watch?v=b Be2KaRuI80

Nautilus Indian & Pacific ~ 1,800 feet Avg. life span = 20 years ( unusual – most cephalopods have short life span) Average size 8-10 inches in diameter Up to 94 tentacles – No suckers Shell with many chambers – Lives in outermost chamber 12

Nautilus 13 v=QMFqV4SJLWg

Cuttlefish mating in mozambique

Cephalopod – Master of Disguise 16 qhomPaxhE qhomPaxhE eKbRIQTxs&feature=related eKbRIQTxs&feature=related

Draw & label this..Yes, you need to color it I miss yall!!  Title this PHYLUM MOLLUSCA ORGANIZER *fill in all the missing information! Each class & example set should be a different color! You may outline them instead of color them in. Choose your own 4 colors! PHYLUM _________ Class ______ Examples..LIST ALL GIVEN FOR EACH

REVIEW ?s if you have time… these are on test 1. Which of the following is NOT a class of phylum Mollusca? a. Gastropoda b. Cephalopodac. Bivalvia d. Cestopoda e. both c and d 2. Mollusks share all but WHICH of the following common characteristics? a.muscular foot b. mantle c. visceral mass d. radula e. none of these Answers …. D D