1 Flashcards
Protoplasmic level
Protozoans
Cellular level
Sponges
Tissue level
Coelenterates and ctenophores
Organ level
Platyhelminthes
Organ system level
Aschel Annelids, arthropods, mollusks, echinoderms - Chordata
Cell aggregate
Sponges
Blind sac type
Coelenterates to platyhelminthes
A-c incomplete single opening ( both mouth Anus )
Tube with in tube type
Namathelminthes ( Aschel) to Chordata
A. C complete
Open type
A T E M
Arthropods tunicates( lower chordates urochordate) echinoderms molluscs hemi
Blood is pumped out of heart and cells, tissues are directly bathed
Closed type
CAC
Cephalopod mollusca Annelida chordate( except urochordata)
Blood is circulated through a series of vessels of varying diameters(arteries, veins blood capillaries)
Asymmetry
Sponges
Any plane
Asymmetry sponges exception
Sycon, leucosolenia exhibit radial sym
Radial symm
Codenterates:clenophores echinoderms [adults]
Any plane thru central axis into identical halves
Bilateral symm
Platy to chordates
Divided into identical left and right in ONLY ONE PLANE
Diploblastic
colenterates ctenophores
Ectoderm endoderm mesoglea
Triploblastic
Platy to chordates
Ectoderm ⬅️mesoderm ⬅️endoderm.
Coelomaties
Annelid. To chordates
Coelom + nt
Pseudocoelomates
Aschel
Mesoderm is present as scattered pouches
Acoelomates
PLaty
Absent coelom
Pseudometameric
Tape wormplaty
Metameric
Annelids arthropods chordates
Protostomiates
Platy to mollusca
Blastopore → mouth [originate first)
Deuterostomiates
Echinoderms hemico chordates
Blast pore → Anus
N C +nt as false structure
Hemichordata
As a buceal diverticulum or stromochord
NC +nt in only tail of larva
Subphylum- Urochordata
NC+ n.t. In head to tail
Subphylum cephalochordata
NC partially replaced by vertebrate column
Cyclostomata chandrichthyes ( cartilages fishes)
Both NC vertebrate present
NC totally replaced by vertebral
Ostechanges [bony fishes] to tetrapod [ amphibian🐸reptilia🐊 aves🦚 Mammalia🐳
