BIO 2102 Exam 1
Animal Phyla
Phylum Porifera, Phylum Cnidaria, Phylum Ctenophora, Phylum Acoelomorpha, Phylum Rotifera, Phylum Platyhelminthes, Phylum Annelida, Phylum Mollusca, Phylum Tardigrada, Phylum Nematoda, Phylum Arthropoda
Platyhelminthes class
Class Turbellaria, Class Trematoda, Class Cestoda
Annelida class
Class Oligochaeta, Class Polychaeta, Class Hirudinea
Mollusca class
Class Bivalva, Class Gastropoda, Class Cephalopoda, Class Polyplacophora
5 types of feeding
Deposit feeding, fluid feeding, bulk feeding, suction feeding
Endoparasite
parasite that lives inside organism
ectoparasite
parasite that latches onto outside of organism
porifera
parazoa, asymmetrical, acoelomic, no gut, suspension feeder/predator, sessile/cillia, direct development/metamorphosis
Ctenophora
Diploblast, radial, acoelomic, complete gut, predator, Cillia, Direct development
Cnidaria
Diploblast, Radial, Blind gut, suspension feeder/predator, sessile/hydrostaticskeleton/muscular foot/jetpropulsion, Direct development/metamorphosis
Acoelmorpha
Triploblast, bilateral, acoelom, no gut, herbivore/predator, Cillia, direct development
platyhelminthes
Triploblast, bilateral, acoelomic, protostome
Rotifera
triploblast, bilateral, psuedocoelomic, protostome
Annelida
triploblast, bilateral, coelomic, protostome
Mollusca
Triploblast, bilateral, coelomic, protostome
Nematoda
Triploblast, bilateral, psuedocoelomic, protostome
Arthropoda
Triploblast, bilateral, coelomic, protostome
Echinodermata
Triploblast, bilateral->radial, coelomic, dueterstome
Chordata
Triploblast, bilateral, coelomic, dueterstome
Subgroups of Protostomes
Lophatrocozoa, Ecdysozoan
Lophatrochazoa
Rotifera, Annelida, Mollusca, Platyheliminthes
Lophatrocazoa growth
Growth via elongation, named based off feeding, spiral embryos
Ecdysozoan Growth
Molting
Solutions to life on land
moist environment, Shells, mechanism for gas exchange
Cephalization
The formation of a central nervous system
Deposited as eggs
Oviparous
Born live
viviparous
Retained as eggs and born live
ovoviviparous
incomplete metamorphosis
similar to adults but lack key features
complete metamorphosis
larvae to adult, complete cell reorginization
Types of movement
Hydrostaticskeleton, Undulation/gliding, limbs (unjointed or jointed)
Convergence
the same trait in multiple species that do not share a common ancestor
Reversion
The loss of a trait in an animal
Choanflagelletes
Single-celled protist
Mouth forms first
protostome
Mouth forms second
Dueterostomes
What classification tends to have a coelom and why?
Triploblast, becuase the coelom is based in the mesoderm
Monophyletic traits
Related organisms with a common ancestor
Polyphyletic
homologous traits evolved with a different ancestor