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
haikierilids
brachiopods and annelid ancestor 500 mya possibly
26
obsrure lophotgrochozan examples
rotifers gnathostomata microchanthozoa
27
gnathifera
had jaws may constitute group in lophophorates have belly with hair
28
what phyla have trochophore larvae
annelids molluscs sipunalids maybe nemerteans and plathelminth