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Zoology > Superphylum Lophotrochozoa > Flashcards

Superphylum Lophotrochozoa Flashcards

1
Q

Shared traits

A

Triptoblastic and bilateral (cephalization and first mouth)

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2
Q

Lophophore

A

Ciliated tentacles that create a feeding structure

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3
Q

Trochozoa

A

Ciliated larva form
Is free swimming

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4
Q

Phyla of interest

A

Platyhelminthes, Rotifera, Nemertea

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5
Q

Phylum Platyhelminthes

A

Flatworms
Two subphyla [Catenulida and Rhabditophora]

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6
Q

Catenulida

A

“chain worms”
Has low diversity

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7
Q

Rhabditophora

A

“Rhabdite bearers”
Rod-like in mucus
Most flatworms fall into this category

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8
Q

Platyhelminthes Special traits

A

First triploblastic animals
Free-living and parasitic
Organ system present (GVC w/ pharynx, no circulatory system, excretory system)

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9
Q

Platyhelminthes cephalization

A

Centralized nervous system
Ganglia form
Light-sensitive eyespots
Auricles (touch, taste, smell)
Have directional movement

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10
Q

Platyhelminthes Reproduction

A

Monoecious and Sexual
Also has regenerative ability (“fragmented reproduction” present some)

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11
Q

Platyhelminthes Four classes

A

Turbellaria
Monogenea
Trematoda
Cestoda

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12
Q

Turbellaria

A

“whirlpool” because covered in cilia
Free-living flatworms that are mostly marine

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13
Q

Monogenea

A

“One host flukes” -> Ectoparasites (fish)
Specific host species
Infects gills of host

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14
Q

Ectoparasites

A

stick to outside of host to survive, usually in the gill region

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15
Q

Trematoda

A

“Two host flukes” -> Endoparasites
Intermediate host -> invertebrate (ex mollusk)
Terminal host -> vertebrates
With complex life cycles

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16
Q

Cestoda

A

Tapeworms
Endoparasites (With vertebrate hosts)
Intermediate hosts -> ex: uncooked meat or feces

17
Q

Rotifera Characteristics

A

Bilateral, triploblastic
Organ system (Complete digestive system)
Pseudocoelum (functions as rudimentary circulatory system)
Dioecious or parthenogenetic (repro options)

18
Q

Phylum Rotifera (and special traits)

A

The rotifers “wheel-bearers”
Specialized traits -> Ciliated corona, muscular mastax, feeding and movement

19
Q

Rotifera Ecology

A

Free-living freshwater (most)
Filter feeders

20
Q

Phylum Nemertea (and special traits)

A

Ribbon worms
special traits -> Proboscis (harpoon structure) within rhynchocoel

21
Q

Nemertea Characteristics

A

Bilateral, triploblastic
Organ system (Complete digestive system)
Pseodocoloem (acts as rudimentary circulatory system)

22
Q

Nemertea Ecology and Reproduction

A

Marine predators
Regenerative ability (asexual or fragmentation)
Most are dioecious

Zoology (21 decks)

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