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INTRODUCTION TO ANIMALS. Chapter 34. Animal Basics. 4 Defining Characteristics Morphology (animal bodies) Invertebrates versus vertebrates. 4 DEFINING CHARACTERISTICS: 1. eukaryotic, multi-cellular (no cell walls) 2. heterotrophic 3. sexual reproduction and development 4. movement.

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Introduction to animals l.jpg

INTRODUCTION TOANIMALS

Chapter 34


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Animal Basics

  • 4 Defining Characteristics

  • Morphology (animal bodies)

  • Invertebrates versus vertebrates


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4 DEFINING CHARACTERISTICS:

  • 1. eukaryotic, multi-cellular (no cell walls)

  • 2. heterotrophic

  • 3. sexual reproduction and development

  • 4. movement


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Morphology

  • Symmetry

    • Radial

    • Bilateral

  • Germ Layers

    • Endo, meso and ectoderm

  • Body Cavities

    • aka Coelem


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Morphology (continued)

  • A closer look at bilateral body symmetry

    • Anatomy terms


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Morphology (continued)

  • Cephalization – concentration of sensory and brain structures in anterior region


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Morphology (continued)

  • A loser look at germ layers and body cavities

    • Animals are either

      • Acoelomates: no body cavity

      • Pseudocoelomates: false body cavity

      • Coelomates: true body cavity


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INVERTEBRATES

Animals without Backbones

1. 2.

3.

4.

5.


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REVIEW: ANIMALS

CHARACTERISTICS:

  • 1.

  • 2.

  • 3.

  • 4.


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REVIEW: ANIMALS

CHARACTERISTICS:

  • 1. eukaryotic, multi-cellular (no cell walls)

  • 2. heterotrophic

  • 3. sexual reproduction and development

  • 4. movement


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PORIFERA

  • Phylum of _____________

  • Digestion, circulation, excretion, and

    gas exchange by ___________________

  • Body support by ____________

  • No tissues

  • Sexual and asexual

    reproduction

  • May have evolved from colonial

    protists


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PORIFERA

  • Phylum of sponges

  • Digestion, circulation, excretion, and

    gas exchange by amebocytes

  • Body support by spongin

  • No tissues

  • Sexual and asexual

    reproduction

  • May have evolved from colonial

    protists


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CNIDARIANS

  • Jellyfish, coral, Hydra, sea anemone, sea fans

  • Polyp and medusa body forms

  • __________ symmetry

  • Tentacles with _________cells

  • ____________cavity with one

    opening for digestion

  • Simple ________ ___ in the outer epidermis to sense the environment

  • Asexual reproduction by ________and sexual reproduction


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CNIDARIANS

  • Jellyfish, coral, Hydra, sea anemone, sea fans

  • Polyp and medusa body forms

  • Radial symmetry

  • Tentacles with stinging cells

  • Gastrovascular cavity with one

    opening for digestion

  • Simple nerve net in the outer epidermis to sense the environment

  • Asexual reproduction by budding and sexual reproduction


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PLATYHELMINTHES

  • Flatworms: planarian, tapeworm, and flukes

  • _____________ symmetry

  • _______________ cavity with 1 opening

  • True muscle tissue

  • Ganglia and ____________ nerve cords

  • Asexual fragmentation and

    _____________ and sexual reproduction

  • Gas exchange by _______ through body wall

  • Acoelomate


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PLATYHELMINTHES

  • Flatworms: planarian, tapeworm, and flukes

  • Bilateral symmetry

  • Gastrovascular cavity with 1 opening

  • True muscle tissue

  • Ganglia and ventral nerve cords

  • Asexual fragmentation and

    regeneration and sexual reproduction

  • Gas exchange by diffusion through body wall

  • Acoelomate


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NEMATODA

  • Roundworms: hookworm, pinworm,

    heartworm, Trichinella, rotifers, soil

    nematodes

  • ________ digestive tract with mouth

    and anus

  • ________________ which transports

    nutrients

  • Gas exchange through _______ body

    wall

  • Sexual reproduction


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NEMATODA

  • Roundworms: hookworm, pinworm,

    heartworm, Trichinella, rotifers, soil

    nematodes

  • Complete digestive tract with mouth

    and anus

  • Pseudocoelom which transports

    nutrients

  • Gas exchange through moist body

    wall

  • Sexual reproduction


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ANNELIDA

  • ______________ worms: earthworm, sandworm, and

    leech

  • Coelomate

  • ________ circulatory system

  • Many body systems

  • _______ sets of muscles

  • Sexual reproduction; most are ________________


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ANNELIDA

  • Segmented worms: earthworm, sandworm, and

    leech

  • Coelomate

  • Closed circulatory system

  • Many body systems

  • Two sets of muscles

  • Sexual reproduction; most are hermaphrodites


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Mollusks: snails, sea slugs; bivalves such as clams, scallops, oysters, and mussels; octopus, squid, and

chambered nautilus (cephalopods)

All have a __________ _____ and a

_____ that produces a shell in most species

_________ circulatory system

Gas exchange by _______ in mantle cavity in water forms or mantle cavity serves as a ________ in land forms

MOLLUSCA


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Mollusks: snails, sea slugs; bivalves such as clams, scallops, oysters, and mussels; octopus, squid, and

chambered nautilus (cephalopods)

All have a muscular foot and a

mantle that produces a shell in most species

Open circulatory system

Gas exchange by gills in mantle cavity in water forms or mantle cavity serves as a lung in land forms

MOLLUSCA


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ARTHROPODA scallops, oysters, and mussels; octopus, squid, and

  • Insects, crustaceans, spiders (Arachnids), centipedes, millipedes

  • ___________of protein and chitin; _____ appendages

  • _________ circulatory system

  • ________________ tubules in insects and

    arachnids remove liquid wastes

  • ____________ _______and/or book lungs

    in terrestrial forms; gills in aquatic

    species for gas exchange

  • _______eyes and antennae in many forms

  • Sexual reproduction with separate sexes and _____________ fertilization


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ARTHROPODA scallops, oysters, and mussels; octopus, squid, and

  • Insects, crustaceans, spiders (Arachnids), centipedes, millipedes

  • Exoskeleton of protein and chitin; jointed appendages

  • Open circulatory system

  • Malpighian tubules in insects and

    arachnids remove liquid wastes

  • Tracheal tubes and/or book lungs

    in terrestrial forms; gills in aquatic

    species for gas exchange

  • Compound eyes and antennae in many forms

  • Sexual reproduction with separate sexes and internal fertilization


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IDENTIFY EACH PICTURE AS TO TYPE OF ARTHROPOD scallops, oysters, and mussels; octopus, squid, and

2.

3.

1.

.

5.

6.

4.

9.

8.

7.


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IDENTIFY EACH PICTURE AS TO TYPE OF ARTHROPOD scallops, oysters, and mussels; octopus, squid, and

crustacean

arachnid

centipede

insect

crustacean

millipede

insect

crustacean

arachnid


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ECHINODERMATA scallops, oysters, and mussels; octopus, squid, and

  • Besides the chordates, this phylum contains the only invertebrates that are ___________________

  • Examples include sea stars, sand dollar, sea urchin, sea cucumber, sea

    lilies, brittle star, sea biscuit

  • _________ skinned animals

  • Unique ________ _________ system

  • Secondary _________ symmetry with no segmentation


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ECHINODERMATA scallops, oysters, and mussels; octopus, squid, and

  • Besides the chordates, this phylum contains the only invertebrates that are deuterostomes

  • Examples include sea stars, sand dollar, sea urchin, sea cucumber, sea

    lilies, brittle star, sea biscuit

  • Spiny skinned animals

  • Unique water vascular system

  • Secondary radial symmetry with no segmentation


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INVERTEBRATES scallops, oysters, and mussels; octopus, squid, and

Animals without Backbones

Check your answers from slide 1, then correct any

that were wrong and add the phylum name.

1. 2.

3.

4.

5.


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INVERTEBRATES scallops, oysters, and mussels; octopus, squid, and

  • Invertebrate Web Quest

  • Click on the picture below to begin.


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Closed and Open Circulatory System scallops, oysters, and mussels; octopus, squid, and