Inverts1 - the mouth -Deuterostome - Second embryonic...

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Kingdom Animalia Kingdom Animalia Multicellular Eukaryotic Heterotrophs
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Animals Animals 2 Major Categories: Invertebrates Without a backbone 97 - 99% of all animals Approx. 34 phyla Vertebrates With a backbone 1% of all animals 1 phylum (Chordata)
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Evolution of Animals Evolution of Animals Classification Criteria Level of organization - Cellular, tissue, organ Body Plan - Sac, tube-within-a-tube Segmentation - Segmentation leads to specialization
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Evolution of Animals Evolution of Animals Symmetry - Radial - Two identical halves - Bilateral - Definite right and left halves
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Evolution of Animals Evolution of Animals Type of Coelom coelom = fluid filled between gut and body wall in which organs can be suspended
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Evolution of Animals Evolution of Animals Early Developmental Pattern - Protostome - First embryonic opening becomes
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Unformatted text preview: the mouth -Deuterostome - Second embryonic opening becomes the mouth Traditional Traditional Phylogenetic Tree Phylogenetic Tree of Animals of Animals Phylum Porifera - Sponges Phylum Porifera - Sponges Only level of animal to have cellular organization Saclike bodies perforated by many pores (ostia) Beating of flagella (choanocytes) produces water currents that flow through pores into central cavity and out osculum Sessile filter feeders Asexual reproduction by fragmentation or budding Sponges Sponges Asconoid Small, tube-shaped Flagellated Spongocoel Syconoid Tubular body Flagellated Canals Leuconoid Most complex, largest Large colonial masses Flagellated Chambers...
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Inverts1 - the mouth -Deuterostome - Second embryonic...

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