Introduction to the Animal Kingdom source. Which of these is an “animal”?
Introduction to the Animal Kingdom. Which of these is an “animal”?
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Transcript of Introduction to the Animal Kingdom. Which of these is an “animal”?
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Introduction to the Animal Kingdom
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Which of these is an “animal”?
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Answer: They are all animals!
Characteristics of Animals: - Heterotrophic - Eukaryotic - Multicellular - Lack cell walls.
95% = invertebrates (do not have backbone) 5% = vertebrates (have a backbone)
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Biology = study of life
Physiology = Study of the functions of organsAnatomy = the structure of the organism/organsZoology = study of animals
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Animal Functions1. Feeding:
Herbivore = eats plants Carnivore = eats animals Omnivore = eats plants and animals Detritivore = feed on decaying organic
material Filter Feeders = aquatic animals that
strain food from water Parasite = lives in or on another
organism (symbiotic relationship)
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2. Respiration:
•Take in O2 and give off CO2
• Lungs, gills, through skin, simple diffusion
Animal Functions
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3. Circulation:• Very small animals rely on diffusion• Larger animals have circulatory system
Animal Functions
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4. Excretion:• Primary waste product is ammonia
5. Response:• Receptor cells = sound, light, external stimuli• Nerve cells nervous system
6. Movement:•Most animals move
Animal Functions
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7. Reproduction: • Most reproduce sexually = genetic diversity • Many invertebrates can also reproduce asexually to increase their numbers rapidly
Animal Functions
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Body Symmetry-The body plan of an animal (How its parts are arranged)
• Asymmetry - No pattern Ex. corals, sponges
• Radial Symmetry - Shaped like a wheel Ex.starfish, hydra, jellyfish
• Bilateral Symmetry - has a right and left side Ex. humans, insects, cats, etc.
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Identify the Symmetry
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Segmentation-“Advanced" animals have body segments, and specialization of tissue Ex. Even humans are segmented, look at the ribs and spine!
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Animal Kingdom Phyla
Phylum Porifera – sponges
Phylum Cnidaria – sea anemones, jellyfish, hydra
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Phylum Platyhelminthes - flatworms
Free-living Planarian Parasitic Tapeworm
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Phylum Annelida – segmented worms
Phylum Nematoda – roundworms
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Phylum Mollusca – clams, squid, snails
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Phylum Arthropoda – crustaceans, insects, spiders
This is the largest phylum in the animal kingdom and contains the most number of species
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Phylum Echinodermata - starfish
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Phylum Chordata – includes all vertebrates