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LU2 CLASSIFICATION AND RELATIONSHIP - Coggle Diagram
LU2 CLASSIFICATION AND RELATIONSHIP
Classification by Cell Number
(1) Unicellular: Single celled
Metazoans: Multicelular
do not develop from anthing resembling a metazoan embryo
Acellular: Without cell
Classification by Developmental Pattern
Diplobastic
Ectoderm: outermost layer of cells
Endoderm: innermost layer of cells
Mesoderm: layer between ectoderm dan endoderm
can arise from either endoderm or ectoderm
Tripoblastic
Pseudocoelomate
Acoelomate
Coelomate
a fluid filled cavity surrounded by mesoderm
advantages
digestive system that independent of the body wall and locomotory activities
Room for the gut, gonads, and embryo's to bulge
fluid that distribute O2, nutrients, and hormones
leads to more affective locomotory systems
Classification by Evolutionary Relationship
Phylogenetic relatedness; ideal taxonomic classification
Phylogenetic relationship based on Hyman, 1940.
Phylogenetic relationship based on 185 rRNA molecular analysis of Cavalier-Smith et al., 1996
all members of a given taxonomic group should have descended from a single ancestral species and thus be more closely related to each other than to the members of any other group.
Classification by Habitat and Lifestyle
Terrestrial, marine, or aquatic
Intertidal or subtidal
Mobile, sessile, or sedentary, planktonic
Herbivores, carnivores, suspension feeders, deposit feeders, filter feeders
Symbiotic associations
Ectosymbionts
Endosymbionts
mutualism, commensalism, paratism
Classification Body Symmetry
Bilaterally symmetrical
Monarch Butterfly
Radially Symmetrical
sea anemones (Phylum Cnidaria)
Asymmetrical
Porifera