lab 7

Question 1

funnel loligo

Answer 1

exhalent thing

Question 2

fins loligo

Answer 2

for thrust

Question 3

tentacles loligo

Answer 3

no suckers along length, however on tip
there are 2

Question 4

arms loligo

Answer 4

suckers along lenth
there are 8

Question 5

suckers loligo

Answer 5

catch prey and grasping

Question 6

color changing epidermal cells

Answer 6

chromatophores

Question 7

what secretes egg cases or egg gel

Answer 7

nidamental gland

Question 8

funnel valve

Answer 8

locomotion via jet propulsion

Question 9

what positions funnel

Answer 9

funnel retractor muscles

Question 10

stellate ganglia

Answer 10

sensory info relay, connects axons

Question 11

systemic heart

Answer 11

pump blood from branchial hearts to rest of body

Question 12

branchial hearts

Answer 12

pump blood through gills

Question 13

ink sac

Answer 13

ink excretion for defense

Question 14

caecum

Answer 14

digestrion and absorption of nutrients

Question 15

jaws

Answer 15

killing and dismembering, chitenous

Question 16

subclass nautiloidea

Answer 16

nautilus
grooves and ridges instead of suckers

Question 17

pen

Answer 17

homologous to external shell

Question 18

subc ammonoidea- how did it remain midwater

Answer 18

gas thru siphuncle
big mfs
cephalopoda

Question 19

coleoidea

Answer 19

internal or absent shell

Question 20

order decapodiforms

Answer 20

subclass coleoidea
cuttlefish
cuttlebone like pen

Question 21

octopodiforms

Answer 21

8 arms no tentacles
no shell

Question 22

columella

Answer 22

protection from drying out and predators

Question 23

siphonal canal

Answer 23

water flow to sensory organs

Question 24

umbilicus

Answer 24

hollow space within whorls

Question 25

periostracum

Answer 25

outermost coating protects shell from corrosion

Question 26

operculum

Answer 26

close aperature

Question 27

siphuncle

Answer 27

allow adjustment of buoyency, input or outputs water