Phylogeny of Spiralia
Annelida
Mollusca
Ectoprocta
Lophotrochozoa
Pogonophora
Eutrochozoa Lophophorata
Spiralia
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Practice Exam for Phylogeny of Spiralia | ZOOL 110, Exams of Zoology
Material Type: Exam; Class: General Zoology; Subject: Zoology; University: Fayetteville State University; Term: Unknown 1989;
Typology: Exams
Pre 2010
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Phylogeny of Spiralia
Annelida Mollusca
Ectoprocta Lophotrochozoa
Pogonophora Eutrochozoa
Lophophorata
Spiralia
Practice Exam Essay
• Pretend that I am cookie monster andI ask you to explain the animalkingdom to me.
In a 2-3 page essay
describe the nature of the animalkingdom.
Select 4 of the following
themes and describe variations,patterns, similarities and differencesacross ALL of the phyla we havelearned.
Lophophorates
pgs. 451-
especially Ectoprocta^ (also called Bryozoa)
Phylogeny of LophotrochozoaPlatyhelminthes
Annelida Mollusca Rotifera
Ectoprocta Lophotrochozoa Pogonophora Eutrochozoa
Lophophorata
Spiralia
PhoronidaBranchiopoda
phylum Ectoproctacompare Hickman Fig. 22-
• eucoelomate• lophophorates• Sessile, marine or freshwater• colonial,individuals microscopic• > 4,000 species, abundant
Ectoprocta Anatomy
fig 22-
lophophoremouthintestineesophaguscoelom
anus
zooid
zoecium
colony
extended retracted
plantstem
Spiralia
• “Spiralia” - all protostomes with spiralclevage at the third division• Includes Lophotrochozoa, and(separately) Rotifera andPlatyhelminthes• Lophotrochozoa should be asubdivision of Spiralia, which shouldbe parallel to Ecdysozoa
Phylogeny of Spiralia
Platyhelminthes
Annelida Mollusca Rotifera
Ectoprocta Lophotrochozoa Pogonophora Eutrochozoa
Lophophorata
Spiralia
3rd
CleavageDivisioncompareCampbell p. 163
basic deuterostome pattern Spiralia pattern
Phylogeny of Spiralia
Platyhelminthes
Annelida Mollusca Rotifera
Ectoprocta Lophotrochozoa Pogonophora Eutrochozoa
Lophophorata
Spiralia
Tardigrade Characteristics Æ^ metameric appendages with claws Æ^ chitinous cuticle, shed to grow Æ^ tiny, no respiratory or circulatory organs Æ^ diecious Æ^ remarkable ability to dry out, freeze, etc.
Tardigrade Biology
Æ^ eat cell contents of mosses or algae, orprey on small animals, using stylet Æ^ ~ 800 species in moss, soil, and pond andocean sediments
Diecious SexualReproduction
previouscuticle offemale shed skin holdsfertilized eggs