Urochordater Flashcards

1
Q

De fire chordattræk

A

Chorda, Gælletarm, Dorsal nervestreng, postanal hale

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2
Q

Alle deuterostomrækker

A

Hemichordat, Echinoderm, Urochordat, Cephalochordat, Agnater, Chondrichthyes, Osteichthyes, Amphibia, Reptilia, Aves, Mammalia

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3
Q

De 3 klasser

A

Ascidier, Salper, Appendicularier

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4
Q

Levemåde for Ascidier, Salper og Appendicularier

A

Ascidier(søpung): Sessile
Salper: planktonisk
Appendicular: Pelagisk

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5
Q

Hvilke chordat træk har de 3 klasser?

A

Ascidier: Gælletarm (Hale, chorda og nervestreng degenerer som larve)
Salper: Alle 4
Appendicularier: Alle 4

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6
Q

Hvordan opsamler urochordater føde?

A

Slimnet på gælletarm filterer fødepartiklen, inden de kommer ind i peribranchia

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7
Q

Særligt for kønsorganer

A

Hermafrodit, hver sin udgang

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8
Q

Fordøjelsessytem

A

Filtration i dorsalfolden i endostylet, mad føres igennem oesophagus ned til marven, ekskretion gennem tarm og kloaksiphon

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9
Q

Blodkredsløb

A

Åbent sinus karsystem uden endothel, Blodstrømning kan skifte retning (pacemakers), intet respiratorisk pigment i blodet

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10
Q

Nævn betegnelser på de 2 billeder

A

Se docs:)

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11
Q

De 3 rækker indenfor deuterostomer

A

Echinodermer, hemochordater, chordater

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