lophotrochozoa Flashcards

1
Q

what is a lophotrochozoa

A

type of prostomes

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2
Q

what two main groups of lophotrochozoa are there

A

spiralians and lophophorates

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3
Q

all phyla of lophotrochozoa

A

platyhelminth

rotifera

bryozoa

brachiopoda

phoronida

nemertea

annelida

mollusca

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4
Q

lopphore structures

A

covered with cillia which trap particles int he water and transprot marticles to mout to filter feed

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5
Q

trophophore larvae

A

larvae stage with ring of cilia (spiralia)
- sgemented worms, coelmicand spiral cleavage
found in molluscs and annelids for example

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6
Q

examples of species with trophophore larvae

A

earthworms
leeches
bristleworms
myzostomids

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7
Q

echuiran

A

borelia vindis; larvae decides gender by where it lands

male; paraistic bag of testicles

adult isnt segmented; only in embryonic developed looks like trochophore larvae

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8
Q

sipuncula

A

phascalian stroma

weird looking trochophore larvae

similar genes to annelids

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9
Q

key features of mollsucs

A

coelmic cavaity
spiral cleavage
trophphore larvae

radula (rasping tongue)
mantel
shell 
gills
muscular foot
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10
Q

molluscs groups

A

bivalvia
gastropods
cephalopods
polyplacophora

aplacapophyla and monoplacophora (ancient)

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11
Q

bivalvia

A

type of mollusc: oysters and mussles

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12
Q

gastropods

A

type of mollusc: slugs and snails

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13
Q

cephalopods

A

type of mollusc: squid, octopus and cuttlefish

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14
Q

polyplacophora

A

type of mollusc: chiton

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15
Q

aplacophora

A

type of mollusc: (ancient) caudoforesta

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16
Q

monoplacophora

A

type of mollusc: neopillana(ancient)

17
Q

nemertea characteristics

A

ghoslike structure

no cavaity

adults grow out of larvae; first meal is outer layer
many have sharp spikes

18
Q

example of nemertea

A

flatworms and unsgemmented worms

19
Q

polyclad flatworms

A

may have a trophopre larvae

20
Q

tuverlleian flatworms

A

nemertea; polyclad turbellena

maritegella

t

21
Q

parastic flatworsm

A

cestode; tape worm

trematatod- liver fluke

22
Q

other lophotrochozoan examples

A

phornids

braciopods (lamp shells)

bryozoan (moss animal)

23
Q

connections between lophophorate braciopods and trochophore annelids

A
  • early developends suggest tjey might be both dervied from a trochopphore larvae
24
Q

rotifers

A

some groups are asexual and believed to have derived from a trochophore

25
Q

haikierilids

A

brachiopods and annelid ancestor 500 mya possibly

26
Q

obsrure lophotgrochozan examples

A

rotifers
gnathostomata
microchanthozoa

27
Q

gnathifera

A

had jaws
may constitute group in lophophorates
have belly with hair

28
Q

what phyla have trochophore larvae

A

annelids

molluscs

sipunalids

maybe nemerteans and plathelminth