1 / 18

5. Major “Invertebrate” Phyla a. Porifera: Sponges

5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans.

ggiroux
Download Presentation

5. Major “Invertebrate” Phyla a. Porifera: Sponges

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans

  2. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans

  3. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms

  4. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms Cephalization: eyespots and auricles Gastrovascular cavity convoluted gut Ameobocytes

  5. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms Parasitic forms: Flukes Asexual reproduction – population increase!

  6. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms Parasitic forms: Tapeworm

  7. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms Oligochaete (‘earth’) worms Polychaete worms Leeches

  8. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms Body cavity (coelom) Hydrostatic ‘skeleton’ Complete gut (‘tract’) Cephalization Segmentation

  9. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods

  10. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods

  11. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods Earliest mollusc, from the Burgess shale, dating to 560 mya, just before the Cambrian Radiation. It is a soft-bodied mollusc

  12. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods The ancestral state is segmentation as in the chitons. In the rest of the group there is reduction of sementation.

  13. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods The ancestral state is segmentation, as in the chitons. In the rest of the group there is reduction of segmentation.

  14. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods The pretty nudibranchs!!

  15. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods In sessile bivalves, there has been ‘decephalization’ – loss of head

  16. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods In sessile bivalves, there has been ‘decephalization’ – loss of head Scallop eyes

  17. 5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish c. Platyhelminthes: Flatworms d. Annelida: Segmented worms e. Mollusca: Chitons, snails, bivalves, cephalopods In cephalopods, the shell is reduced from external to internal bony to internal cartilaginous to gone

  18. Folded front to back

More Related