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XI. Reproduction

XI. Reproduction. Asexual budding b. gemmules formed in stress conditions (contain amoebocytes covered by hard outer coating). XI. Reproduction. 2. Sexual a. Most monoecious = both sexes in same organism (hermaphrodites) egg & sperm produced

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XI. Reproduction

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  1. XI. Reproduction • Asexual • budding b. gemmules formed in stress conditions (contain amoebocytes covered by hard outer coating)

  2. XI. Reproduction 2. Sexual a. Most monoecious = • both sexes in same organism (hermaphrodites) • egg & sperm produced • cross fertilization (sperm from one sponge fertilizes eggs from another sponge) • egg + sperm => free-swimming larvae

  3. XI. Reproduction 2. Sexual b. Some dioecious • Separate sexes • Egg OR sperm produced Sponge releasing sperm

  4. XII. Ecological Roles • Habitat for other aquatic animals B. Food for some

  5. XII. Ecological Roles C. Home use: bathing, cleaning, home improvement, other

  6. XII. Ecological Roles D. Medical research • Sponges do not get cancer. Why not? Maybe we can use what keeps them from getting cancer to treat humans………..

  7. Azure Vase Sponge

  8. Giant Barrel Sponge

  9. White Cryptic Sponge

  10. Elephant Ear Sponge

  11. Stove pipe sponge

  12. Yellow Vase Sponges

  13. Yellow Barrel Sponge

  14. Red Branch Sponge

  15. How deep would the oceans be if there were no sponges?

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