1 / 24

Phylum – Porifera The Sponges

Phylum – Porifera The Sponges. Kingdom – Animalia Phylum – Porifera (pore-bearing). Taxonomy. Simplest of all animals Contain specialized cells but no other organization Most are marine Saltwater sponges are brightly colored Freshwater sponges are small and dull green color

carlamendez
Download Presentation

Phylum – Porifera The 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. Phylum – PoriferaThe Sponges

  2. Kingdom – Animalia Phylum – Porifera (pore-bearing) Taxonomy

  3. Simplest of all animals Contain specialized cells but no other organization Most are marine Saltwater sponges are brightly colored Freshwater sponges are small and dull green color Size – 2 meters to 2 cm Characteristics

  4. Porifera: pore-bearing Water enters through pores bringing in food and oxygen Filter feeders on plankton Osculum – large opening at the top where excess water leaves Characteristics

  5. Water Flow Through the Sponge WATER OUT WATER IN Osculum

  6. Water Flow Through Sponge Take a Ride Through a Sponge

  7. Asymmetrical Sessile as adults (attach to rocks) Free-swimming larval stage Also reproduce by fragmentation (pieces break off & form a new sponge) Characteristics

  8. Inside body cavity of sponge is hollow Called the Spongocoel Sponge Body Structure

  9. Choanocytes line the gastrovascular cavity & capture food • Amebocytes digest & distribute food

  10. Choanocytes(collar cells) line inside of body cavity (spongocoel) Have flagella that spins to pull in water & food Collar traps plankton (food) from water Specialized Cells Collar

  11. Amebocytes: Pick up food from choanocytes Finish digestion Move through the mesenchyme & take food to other cells Other Specialized Cells

  12. Overview of Specialized Cells

  13. Skeleton made of network of protein fibers called Spongin Spicules are hard spear or star-shaped structures Spicules made of CaCO3(limestone) or silica (glass) Skeletal Structure of the Sponge

  14. Sponge Skeletons Silica Spicules Limestone Spicules SPONGIN

  15. Sponge Skeletons VENUS FLOWER BASKET SPICULES

  16. Sponges can regrow body parts through cell division (asexual) Sponges also reproduce asexually by budding Sponge Reproduction

  17. Sponges are hermaphrodites (produce eggs & sperm) Sponges reproduce Sexually by releasing eggs & sperm into the water from the Osculum Cross-fertilize each other’s eggs Sponge Reproduction Sponge releasing eggs & sperm

  18. Branching Tube Sponge

  19. Stove Pipe Sponge

  20. Vase Sponges

  21. Barrel Sponges

  22. Ball Sponges

  23. Rope Sponges

More Related