Post Exam 1: Kingdom Animalia Flashcards
criteria
heterotrophs, motile, multicellular, aerobic
hox genes
hox genes
suite of genes controlling embryological development
embryological criteria
of tissues
symmetry
blastula and gastulation events
coelum development
types of # of tissues
no true tissue
diploblast
triploblast
no true tissue
sea sponge of phylum: Porifera
diploblast
2 tissue types, 1 phylum: Cnidaria, jellyfish
ectoderm: skin
endoderm: lines gut
triploblast
3 tissue types, all other phylums
ectoderm: skin, outer lining
endoderm: inner lining of gut
mesoderm: structural tissue, nerve tissue
symmetry definition
2 equal halves
symmetry types
asymmetry
radial symmetry
bilateral symmetry
asymmetry
no planes of symmetry
ex. sea sponge of phylum: Porifera
radial symmetry
more than one plane of symmetry, results in 360° sensory receptors
ex. sea urchin of phylum: Echinodermata
also phylum: Cnidaria
bilateral symmetry
one plane of symmetry, leads to sidedness (right/left, ventral/dorsal)
this leads to cephalozation and directed movement
gastulation
invagination of blastula forming the “tube (digestive tract) within a tube”
protostome
organism in which first opening is a mouth
spiral cleavage of the blastula
dueterostome
organism in which first opening is an anus (chordates, echinoderm)
radial cleavage of blastula stage
