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Phylum Annellida

Phylum Annellida. Phylum Annellida Classification Contain circular rounded long body (bilaterally symmetrical) Segmented Has no respiratory organs Has a closed circulatory system. Digestive System. Annelids Digestive system is basic Contains a mouth which swallows food

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Phylum Annellida

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  1. Phylum Annellida Phylum AnnellidaClassification • Contain circular rounded long body (bilaterally symmetrical) • Segmented • Has no respiratory organs • Has a closed circulatory system

  2. Digestive System • Annelids Digestive system is basic • Contains a mouth which swallows food • Goes through crop and gizzard • Then the intestines that lead to the anus

  3. Circulation System • Blood carried through annilids contain hemoglobin • It’s a closed circulation which means its in well developed blood vessels • Has 5 hearts/Aordic Arches

  4. Respiratory System • Annelids do not contain lungs or organs to help them breath • Breath through their skin • Lets out carbon dioxide through skin • Oxygen can be transported to blood

  5. Dissection : Earthworm • Have your worm look like this

  6. Dissection : Earthworm External Mouth: Eats food Setae: Helps the worm move through the ground Sperm Duct: Where sperms are released Clitellum: where eggs are held and released for reproduction

  7. Dissection : Earthworms Internal Brain: what do you thin think it does? Pharynx: Swallows food food Esophagus: moves food food to crop, gizzard Seminal Vesicles:stor stores sperms Aortic Arches: hearts Nephridia: Like a kidney Crop: Stores food Intestines: transfers Gizzard: Grinds up food nutrients Nerve Cord: Sensors and receptors

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