the animal kingdom notes - pg. 129 eq: what are the major functions of animals?
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The Animal Kingdom The Animal Kingdom Notes - pg. 129Notes - pg. 129
EQ: What are the major functions of animals?
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Key QuestionsKey Questions
How are animal bodies typically organized?
What are four major functions of animals?
How are animals classified?
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Body Organization of Body Organization of AnimalsAnimals
The body of most animals are organized into cells, tissues, organs, and organ systems.
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Functions of AnimalsAll animals carry out the same basic physiological processes.
1. Obtaining food and oxygen
2. Homeostasis - Keeping internal conditions stable.
3. Movement
4. Reproduction
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Classification of Animals1. Animals are
classified by their relation to other animals.
2. Relationships are determined by body structure, development, and DNA.
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Two Main Groups of Two Main Groups of AnimalsAnimals
1. Vertebrates
2. Invertebrates
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INVERTEBRATES:Invertebrates:vertebrates:
animals without a backbone.
Invertebrates make up 97% of all animal species.
Earthworms
Sea anemones
Butterfly
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Common Phyla of Invertebrates
1. Phylum Porifera – sponges2. Phylum Cnidaria – jellyfish, coral3. Phylum Platyhelminthes – flat worms4. Phylum Nematoda – round worms5. Phylum Annelida – segmented worms6. Phylum Mollusca – snails, squid, octupus7. Phylum Arthropoda – insects, crustaceans8. Phylum Echinodermata – seastars
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VERTEBRATES:VertebratesVertebrates: : aanimals with a skull
and a backbone.
All vertebrates belong to Phylum Chordata.
1. Fish2. Amphibians3. Reptiles4. Birds5. Mammals
• Less than 3% of animal species are vertebrates.
Amphibian
Fish
Reptiles
Birds
Mammals
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Ectotherms(Coldblooded)
1. Amphibians, Reptiles and Fish
2. Bodies do not produce much internal heat.
3. Body temperature depends on temperature of the environment.
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Endotherms(Warm-blooded)
1. Birds and Mammals
2. Maintain a stable body temperature.
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SYMMETRYThere are 3 animal body plans:
radial symmetry, bilateral symmetry or no symmetry.
Radial Symmetry – body organized around a center point.
Bilateral Symmetry - the two halves of the body are mirror images.
No Symmetry - Uneven
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Examples of Symmetry