Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ZOOL 250 lectures 13-28 > lecture 17 cephalopod > Flashcards

lecture 17 cephalopod Flashcards

1
Q

What is class scapholopoda

A

tusk shells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

calss scapholopoda how many spp

A

500

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is scapholopoda shell like

A

tubular, tapering shell open at both ends

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what does class scaphopoda lack

A

lack ctenidia and eyes and heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

habitat of scaphopoda

A

buried in soft sediment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are captacula

A

very thin tentacles around scaphopod foot

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how is water moved in and out of mantle in scaphopods

A

via vilia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what do captacula have?

A

sticky bulbous tips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what do captacula do?

A

put organic shit in mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

how is food ground up scaphopoda?

A

internal radula

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

fertilization in scaphopoda

A

external

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

class cephalopoda

A

squids and shit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

how many spp cephalopoda

A

750

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

characteristics of class cephalopoda

A

largest, fastest and most intellegent invertebrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

cephalopoda shell

A

absent or reduced

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is formed by the head and foot

A

arms, tentacles, cirri, and funnel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is the difference from arms and tentacles

A

arms have suckers along all their length
tentacles lack suckers only at the tips

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what are the appendages of nautiluses called?

A

cirri

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

what is different about cirri

A

they are retractible into sheaths and they are non elastic, lack pads and suckers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

what is clade nautilida

A

excint mfs in cephalopoda

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what is Ammonoidea

A

extinct mfs in cephalopoda

22
Q

What is Coleoidea

A

contains octopodiforms and decapodiforms

23
Q

nautilus how many ctenidia

A

two pairs

24
Q

how many ctenidia extant groups excluding nautilus

A

one pair

25
Q

how is water moved in ctenidia in cephalopods

A

not cilliated, so water moved by muscular action of mantle

26
Q

decapodiforms circ system

A

closed circ system
also have accessory pumps associated w ctenidia(branchial hearts)

27
Q

nautiluses shell

A

only cephalopod w external shell
has septa and siphuncle

28
Q

siphuncle function

A

control buoyency

29
Q

shells in other cephalopods

A

reduced inside body

30
Q

internal shell cuttlefish vs squid

A

cuttlefish have calcareous cuttlebone
squid have chitenous pen

31
Q

what extinct taxa had large external shell

A

ammonoids

32
Q

extinct squids that had hard internal shells

A

belemnoids

33
Q

what is funnel called and used for

A

siphon used for jet propulsion

34
Q

how do octopuses move

A

they crawl

35
Q

how do squids and cuddlefish move slowly

A

undulate fins

36
Q

what are the color changing cells in cephalopoda

A

chromatophores

37
Q

what are colour patterns used for

A

camouflage and social displays

38
Q

how do chromatophores worlk

A

the pigment in an expanded chromatophore is displayed

39
Q

what is ink used for

A

defense

40
Q

eyes in cephalopods

A

are image forming

41
Q

how do eyes work in cephalopods

A

retinal axons pass directly out of the back of the retina

42
Q

nautilus eyes

A

pinhole cameras

43
Q

cephalopoda diet

A

they are carnivores

44
Q

how do cephalopods eat shit they catch

A

it is bitten with beak and injected with venom

45
Q

what is beak made of

A

chitin

46
Q

what is the exception to carnivore cephalopods

A

vampire squid
it eats detritus

47
Q

what type of development in cephalopoda

A

direct development

48
Q

how does copulation happen in cephalopods

A

spermatophores transfered via modified arm w groove

49
Q

how is the cephalopod embryo fed?

A

internal yolk supply

50
Q

what are some useful things about mullusca

A

shells used for decorations or currency
pearls and pearl buttons
dyes from snails
aquarium trade
most eaten out of invertebrates

51
Q

what are byssal threads used by us

A

sea silk

52
Q

how are molluscs important for parasites

A

intermediate hosts

ZOOL 250 lectures 13-28 (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions