chapter29%20-%20animal%20diversity%20Spring%202009%20_1_

chapter29%20-%20animal%20diversity%20Spring%202009%20_1_ -...

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The Animal Kingdom: Animalia An Introduction to Animal Diversity Chapter 29
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Kingdom Animalia Eukaryotic, multi-cellular Heterotrophic ; ingest, then digest Cells specialized for specific functions Diverse body plan (development, form, function) Most capable of locomotion during life cycle Can respond adaptively to external stimuli Can reproduce sexually
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Aquatic Environments Marine Advantages: relatively stable temperatures buoyancy and water motion for nutrients and waste readily available food - protists and plankton fluid and salt balance isotonic for invertebrates Marine Disadvantages: currents provide challenges and need adaptations some become sessile on rocks, others burrow, others become plankton (en masse) Freshwater Advantages: Buoyancy, water motion for nutrients and waste readily available food - protists and plankton Freshwater Disadvantages: more difficult environment; provides less constant environment (O2, temperature,
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chapter29%20-%20animal%20diversity%20Spring%202009%20_1_ -...

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