Lecture 10 - Animals of Multiple Cells

Question 1

what eats sponges (Phylum Porifera)

Answer 1

spongillaflies

Question 2

sponges are ____ feeders,
they are also friends with algae - why?

Answer 2

filter
sponge symbiosis with algae: algae gives sponge oxygen, sponge gives algae home/protection

Question 3

cnidaria have cnidocytes. what are these?

Answer 3

specialized cells with filaments to lure prey

Question 4

hydra:
- habitat:
- _____ in water or _____ to benthic substrates
- they eat _______

Answer 4

streams, wetlands, lakes
float in water or attached to benthic substrates
eat small invertebrates

Question 5

platyhelminths are _______ and ___ worms and why are they a nusence for humans?

Answer 5

tape and flatworms
and they suck for humans because they’re parasites

Question 6

nemertea are _______ and live in ______

Answer 6

non segmented worms
marine environments

Question 7

gastrotricha:
- habitat:
- predator that eats:
- why are they abundant?

Answer 7

benthic, shallow habitat
bacteria, algae, protozoa
eggs resistant to drying/freezing/heat…

Question 8

which phylum is the zooplankton in?

Answer 8

rotifera

Question 9

nematoda are the _____ worms that live in ____ habitat

Answer 9

round
extreme

Question 10

what are the two subsections of phylum mollusca?

Answer 10

gastropoda (snails)
bivalvia (clams)

Question 11

gastropoda are grazers. what does that mean?

Answer 11

grind surfaces of rock to pull algae of rock

Question 12

why are gastropoda (snails) important in controlling primary production levels

Answer 12

they eat algae (primary producers), so they control how much algae that grows

Question 13

T/F: of the phylum mollusca, gastropoda are hosts for many parasites

Answer 13

False, gastropoda (snails) AND bivalvia (clams) are hosts for parasites

Question 14

which subgroup of the phylum mollusca is the host to many host-specific parasites

Answer 14

bivalvia (clams)

Question 15

oligochaetes are part of which phyla, eat _____ and live where?

Answer 15

annelidia (segmented worms)
eat detritus
live in shitty environment: low O2 and pollution

Question 16

leeches are part of what phyla, eat what and found where

Answer 16

annelidia (segmented worms), eat mollusc/insects/worms, live in slow moving water

Question 17

bryozoans are sessile and heterotrophs. what does this mean

Answer 17

sessile = attached to substrate
heterotroph = eat suspended food particles

Question 18

arthropoda have 3 general points/characteristics. what are they

Answer 18

have 3 body segments
chitin exoskeleton
diverse

Question 19

what are the 3 main subgroups of the phyla arthropoda?

Answer 19

arachnida
insecta
crustacea

Question 20

arachnida:
- water mites and spiders
- mites live in:
- spiders live:
- mites are _____ and some ______

Answer 20

mites live in fresh waters
spiders live on land beside water
mites are predaceous and some parasitic

Question 21

insecta:’
- what’s so special about their life cycle?
- can live in ____ or _____ water
- feeding examples

Answer 21

part of life cycle in water, other part on land
lentic (not flowing) or lotic (flowing) water
scrapes, shredders, parasites, predator

Question 22

crustacea have a cool exoskeleton. what’s it made of

Answer 22

chitin exoskeleton reinforced with calcium

Question 23

what are the 5 subgroups of crustacea

Answer 23

DOCBIA
(decadent ostriches cope breakdancing in anguish)

Decapoda
Ostracoda
Copepods
Branchipoda
Isopoda
Amphipoda

Question 24

Ostracoda aka. seed shrimp
- habitat:
- food:
- what’s so special about them?

Answer 24

benthic, in all aquatic places
eat detritus and algae
taste yummy to predators

Question 25

Copepods - micro-_____ - habitat: - what’s so special about them?

Answer 25

micro crustaceans benthic or pelagic complex behaviours: predator avoidance, mating, foraging ^ COPE-pods know how to cope

Question 26

Branchipoda - water ___ and ____ - habitat: - they don’t like: - what’s so special about them?

Answer 26

water fleas and shrimps pelagic zone of lake don’t like flowing water predator avoidance by moving to bottom o flake during day so predators can’t see them

Question 27

Decapoda - ex. - highly developed ____

Answer 27

crabs, lobsters, shrimp chelae (pinchers)

Question 28

isopoda vs amplipoda - morphology - eating habits - habitat

Answer 28

isopoda are flat and wide amphipoda are skinny and tall they both are detrivores and live in streams

Question 29

the ____ and _____ of the fish depends on _____

Answer 29

shape and mouthparts where they live

Question 30

fish have 3 main sensory systems:

Answer 30

eyes, chemoreception lateral line (feel vibrations)