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BIOL 1030 > Lophotrochozoa (protostomia) > Flashcards

Lophotrochozoa (protostomia) Flashcards

1
Q

P. Chaetognatha

A

Arrow worms; predators of marine plankton

Mysterious relation to Protosomia and Ecdysozoa

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2
Q

Lophotrochozoa

A

Do not molt

Grow by extending size of skeleton

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3
Q

Ecdysozoa

A

Molt

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4
Q

Platyzoa

A

Contains P. Platyhelminthes and P. Rotifera

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5
Q

P. Ectoprocta

A

Moss animals

Coelomate

Secrete and live in a chitinous chamber (zoecium)

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6
Q

P. Platyhelminthes

A

“Flatworms”

Acoelomate, no circulatory system, most hermaphroditic

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7
Q

P. Rotifera

A

Pseudocoelmate parasites

Have corona; jaws in pharynx

Hydrostatic skeleton

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8
Q

P. Annelida

A

Segmented worms

Coelomate, hydrostatic skeleton, septa, setae

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9
Q

P. Nemertea

A

Ribbon worms

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10
Q

P. Phoronida

A

Horseshoe worms

Coelmate

Secrete and live in a chitinous tube

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11
Q

P. Brachiopoda

A

Have two calcified shells that superficially resemble clams

Anchored by stalk

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12
Q

P. Mollusca

A

(snails, slugs, clams, oysters, chitons, cuttlefish, etc.)

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13
Q

C. Turbellaria

A

Only free-living flatworms

Use pharynx to feed

Include planaria

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14
Q

C. Trematoda

A

Flukes

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15
Q

C. Cestoda

A

Tapeworms

Scolex - head
Proglottids - hermaphroditic units

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16
Q

C. Polychaeta

A

Polychaetes

More cephalized

Parapodia, separate sexes

17
Q

C. Oligochaeta

A

Earthworms

Hermaphroditic with clitellum

18
Q

C. Hirudinea

A

Leeches

Hermaphroditic with clitellum

19
Q

C. Polyplacophora

A

Chitons

Marine with 8 calcaeous plates for a shell

20
Q

C. Gastropoda

A

Snails and slugs

Operculum - “door” when it withdraws

21
Q

C. Bivalvia

A

(clams, oysters, scallops, mussels)

22
Q

C. Cephalopoda

A

(octopuses, squids, cuttlefish, nautilus, etc.)

0-1 internal or external shells

BIOL 1030 (22 decks)

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