Bivalvia Flashcards
1
Q
deposit feeder
A
eats bits of organic matter that has settled to the bottom
2
Q
suspension feeder
A
eat floating bits of organic matter (includes filter feeders)
3
Q
Protobrach bivalves
A
- deposit feeders
- use their gills for respiration
4
Q
Lamellibranch bivalves
A
- majority of bivalves
- filter feeders
- use their gills to feed
5
Q
iridophores
A
Giant clam- reflective structures that help get more light to symbiotic photosynthetic bacteria
(same kind of symbiosis as coral)
6
Q
How bivalves move
A
- swim
- leap (with foot)
- burrow (with foot)
7
Q
how bivalves anchor themselves to a substrate
A
- byssal threads (mussels) (foam secreted and turned into thread with foot)
- cement
8
Q
pros of movement
A
-escape from predators
9
Q
how freshwater clams move upstream
A
-lures: mother tricks fish w/ bio-mimicry, releases larvae into fish gills
10
Q
cepalization?
A
no
11
Q
environmental impacts
A
- water filtration
- reef building
12
Q
eyes?
A
yes! in some
- 2 retina, (one w/ rhabdomeric and one with ciliary receptors!)
- bad eye sight- scallops have best
13
Q
adaptive zone
A
- fresh and salt water
- most parts of sea (intertidal to deep)
- huge variation (hydrothermal vents, woodboring “shipworms”)
14
Q
septibranchs
A
predators
