Class Cephalopoda “head footed” Shell in squid and octopus absent or vestigial (serves no...

Class Cephalopo

da“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

• http://www.youtube.com/watch?v=QMFqV4SJLWg nautilus• http://www.youtube.com/watch?v=lwAqhThd_EQ giant octopus • http://www.youtube.com/watch?v=bBe2KaRuI80 intelligent

octopus • http://www.youtube.com/watch?v=5rqhomPaxhE cephalopod

masters of camo• http://www.youtube.com/watch?v=IyeKbRIQTxs&feature=related

invisible octopus..slowed down• https://

www.youtube.com/watch?v=2x-8v1mxpR0&feature=related meet the cuttlefish

• https://www.youtube.com/watch?v=v8Aw7QroV78 cuttlefish mating rituals

SquidSquid

3

DorsalVentral

Posterior surface

Right

Left

SquidSquid

4

FinFin

ArmArm

Funnel (siphon)Funnel (siphon)

EyeEye

TentacleTentacle

CollarCollar

SquidSquid

5

Shell (Pen)Shell (Pen)

Ctenidium (gills)Ctenidium (gills)

FunnelFunnel

SystemicheartSystemicheart

Branchial heartBranchial heart

Squid MaleSquid Male

6

TestisTestis

Hectocotylous armHectocotylous arm

PenisPenis

Squid FemaleSquid Female

7

Ovary with eggsOvary with eggs

Nidamental glandsNidamental glands

Oviducal glandOviducal gland

Oviducal openingOviducal 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

• http://www.youtube.com/watch?v=lwAqhThd_EQ

Intelligent Octopus

11

• http://www.youtube.com/watch?v=bBe2KaRuI80

Nautilus

• Indian & Pacific Ocean @ ~ 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

• http://www.youtube.com/watch?v=QMFqV4SJLWg

Cuttlefish

14

• http://www.youtube.com/watch?v=2x-8v1mxpR0&feature=related

• http://www.youtube.com/watch?v=v8Aw7QroV78 mating in mozambique

Cephalopod – Master of Disguise

16

• http://www.youtube.com/watch?v=5rqhomPaxhE

• http://www.youtube.com/watch?v=IyeKbRIQTxs&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 ______ Class ______ Class ______

Examples ..LIST ALL GIVEN FOR EACH

Examples ..LIST ALL GIVEN FOR EACH

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. Cephalopoda c. 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