V' Kingdom Animalia

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V. Kingdom Animalia A. Introduction 1.
Characteristics Eukaryotic Multicellular
Heterotrophic Lack cell walls.
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History - first animals
in fossil record date to 900 mya largely
wormlike soft-bodied organisms
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History - first animals
in fossil record date to 900 mya largely
wormlike soft-bodied organisms - in the
Cambrian, 550 mya response to predators
(Cnidarians) radiation of major phyla
organisms with hard parts
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
- Approximately 1 million described animal
species. Of these 5 have a backbone
(vertebrates) ( a subphylum in the phylum
Chordata)
Pikaia - earliest Chordate
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
- 95 lack a backbone (invertebrates) (in 29
Phyla, including Chordata) - 85 are Arthropods

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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
- most types of animals (phyla) are
invertebrate, marine orgs. - humans are not
typical animals
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends - Body Symmetry
asymmetrical radially symmetrical bilatera
lly symmetrical
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends - Embryological
development zygote morula blastula
gastrula neurula
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends - Cephalization
evolving a head
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends - Digestion
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends - Digestion
intracellular to extracellular
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends - Digestion
intracellular to extracellular gut to
tract
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V. Kingdom Animalia A. Introduction 1.
Characteristics 2. History 3. Diversity
4. Evolutionary Trends 5. Phylogeny
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5. Phylogeny