4/3/2017
Animal Phyla Notes Part 1
9 Animal Phyla
• The Kingdom Animalia are divided into these 9 Phylum's
1) Porifera 6) Mollusca 2) Cnidaria 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 animals.
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 - Corals
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Sea Anenome
Portugese Man of War Physalia physalis
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Ivory Bush Coral Oculina 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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