4/3/2017

Animal Phyla Notes Part 1

9 Phyla

• The Kingdom Animalia are divided into these 9 Phylum's

1) Porifera 6) Mollusca 2) 7) Arthropods 3) Platyhelminthes 8) Echinodermata 4) Nematoda 9) Chordata 5) Annelida

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1) Porifera

• Sponges are an example of organisms in the Phyla Porifera. Sponges cannot make their own food and are referred to as simple .

Characteristics of Porifera

- Asymmetry -Live in water floating or attached to one place -Filter feeders -No nervous system or digestive tract.

Water flows in the side of the sponge and collar cells filter particles of food from water and digest it.

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Giant Barrel Sponge Xestospongia muta

Stove-pipe Sponge Aplysina archeri

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2) Cnidaria • Cnidarians are more complex than sponges, have complex tissues, a gut for digesting food and a nervous system.

Characteristics of Cnidarians - Radial Symmetry - All live in water floating or attached to one place -Most have tentacles with stinging cells called nematocysts.

3 Types of Cnidarians - Hydras - Jellyfish & Sea Anemones -

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Sea Anenome

Portugese Man of War Physalia physalis

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Ivory Bush varicosa

Giant Green Anenome Oculina varicosa

3) Platyhelminthes (flatworms)

One of the 3 worm Phyla’s that we are going to be discussing

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Characteristics of Platyhelminthes

- Bilateral Symmetry - Most live in water - Have a flattened body - Some are parasitic

3 Types of Platyheminthes - Planarians - Flukes - Tapeworms

4) Nemotoda (roundworms) The second of the worm Phyla we will discuss

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Characteristics of Nemotoda (roundworms)

• Bilateral Symmetry • Live in water or on land • Have a round body • Some are parasitic

Examples of Nemotoda - Pinworms - Heartworms

5) Annelida • Annelids are different from other phylum’s of worms because it has body segments. Segments are identical repeating body parts.

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Characteristics of Annelids • Bilateral symmetry • Live in water or on land Bodies are divided into segments that have bristles to help them move • Few are parasitic Examples of Annelids - Earthworm - Leeches

Leeches Medical Use

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