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 16- bivalve > Flashcards

lecture 16- bivalve Flashcards

1
Q

what clade is bivalve

A

conchifera

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

what is class bivalve

A

mussels and oysters and clams and shit

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

how many spp bivalve

A

10000

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

habitat of bivalves

A

most marine some freshwater

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

What are bivalves modified for?

A

burrowing and feeding on fine particles

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

what is a bivalve shell

A

two valves hinged dorsally and kept aligned with hinge teeth.

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

What keeps valves closed

A

adductor muscles

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

what are some adaptations of bivalves

A

bivalve shell
loss of radula
byssus
lateral compression of body
adductor muscles
ligament w hinge of shell

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

bivalve features
Head
Ctenidia
Foot
Mantle

A

-head very reduced and lacks radula
-ctenidia modified for filter feeding
-produce byssal threads
-foot modified for burrowing
-mantle ofter modified into siphons

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

what is weird about scallop mantle

A

they have eyes in their mantle

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

juvenile shell

A

umbo

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

where is the hinge ligament in respect to umbo

A

posterior

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

what happens to the ligament when the adductor muscles contract

A

the valve closes and the outer part of ligament is stretched and inner part is compressed

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

what is contained in the hinge area

A

teeth

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

what do the teeth do

A

keep shell from slipping

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

how many ctenidia do bivalves have

A

one pair

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

different types of ctenidia

A

respiratory ctenidia and filter feeding ctenidia

18
Q

what are respiratory ctenidia called

A

protobranch gills

19
Q

what are filter feeding ctenidia called

A

lamellibranch gills

20
Q

lamellibranch gills morphology

A

filaments arranged in Vs of ascending and descending arms called demibranches

21
Q

what is the mantle cavity divided into in lamellibranch gills

A

an exhalent and inhalent chamber

22
Q

what are the two types of lamellibranch gills

A

filibranch and eulamellibranch

23
Q

filibranch gills

A

adjacent gill filaments attached by tufts of cilia

24
Q

eulamellibranch gills

A

adjacent gill filaments attached by bridges of solid tissue

25
Q

which clades have protobranch gills and lamellibranch gills

A

-the basal clade protobranchia have protobranch gills
-all the other clades have lamellibranch gills.

26
Q

How do protobranch bivalves feed

A

use two pairs of large labial palps

27
Q

where are low density particles sent in protobranch

A

towards the mouth as they are likely organic

28
Q

where are high density particles sent in protobranch

A

ejected into mantle cavity

29
Q

how do lamellibranch bivalves feed

A

gills filter particles

30
Q

how do the gills in lamellibranch bivalves filter?

A

-frontolateral cilia flick particles to surface of filament.
-particles are then moved towards food groove
-then moved to palps where they are sorted

31
Q

how are particles ejected in eumellibranchs

A

they accumulate and are ejected as pseudofeces

32
Q

how do bivalves burrow

A

shell and foot act as alternating anchors

33
Q

how do byssal threads work

A

harden as is comes into contact w sea water

34
Q

how do byssal threads work in muscles

A

they are produced throughout life

35
Q

how do oysters attach themselves to substrate

A

they cement themselves

36
Q

bivalve sexes

A

seperate

37
Q

what is spawning like in marine bivalves

A

most gametes are spawned freely into water

38
Q

what is spawnign liek in freshwater bivalves

A

sperm inhaled by female and fertilization is in mantle caviry, they are brooded

39
Q

larval stages of most bivalves

A

free swimming trochophore to later veliger

40
Q

glochidia

A

larva that absorb nutrients and ride fish
fish are baited because mantle looks like fish

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