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Biology Honors Biology Honors Chapter 14.  Multicellular (many cells)  Eukaryotic (cells contain nucleus)  Heterotrophic (must eat)  Lack cell walls.

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Presentation on theme: "Biology Honors Biology Honors Chapter 14.  Multicellular (many cells)  Eukaryotic (cells contain nucleus)  Heterotrophic (must eat)  Lack cell walls."— Presentation transcript:

1 Biology Honors Biology Honors Chapter 14

2  Multicellular (many cells)  Eukaryotic (cells contain nucleus)  Heterotrophic (must eat)  Lack cell walls  Move

3  34 total phyla in the kingdom  Classifying criteria:  Body symmetry  Level of organization

4  Asymmetry  No symmetry  Radial symmetry  Circular shape  Bilateral symmetry  Identical right & left halves

5  Cells  Simplest animals are made of independent cells  Tissues  Cells work together to form specialized tissues like muscle tissue  Organs  Tissues work together to form organs; that do a specific job

6  Asymmetrical  Organized into cells  Aquatic animals  Sessile, filter feeder  Examples:  Sponges

7  Radially symmetrical  Organized into tissues  Live in shallow coastal marine waters  Have stinging cells called cnidocytes  Examples:  Jellyfish  Sea Anemones

8  Flat worms  Bilaterally symmetrical  Complex tissues: nerves and brain  Mostly parasitic  Examples:  Tapeworms  Planarian

9  Round worms  Bilateral Symmetrical  Organized into tissues  Complete digestive tract  Examples:  Round worms  Hook worms  Pinworms

10  Segmented worms  Divided into sections with a well developed heart & a closed circulatory system  Examples:  Earthworm  Bristle worm  Leeches

11  Soft body, occasional shell  Organized on the organ level  Examples:  Clams  Squid  Snails  Octopi – has tentacles

12  Over one million species  Have jointed appendages  Head, thorax, & abdomen  Have an exoskeleton  Examples  Spiders  Crayfish  Insects

13  Have an internal skeleton  Radially symmetrical  Well developed organs and systems  Examples:  Sea stars  Sea lilies  Sea urchins

14  Most advanced animals  Well developed brain & nervous system  Bilaterally symmetrical  All reproduce sexually  Examples:  Fish  Amphibians  Reptiles  Mammals  Birds


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