Animal kingdom(sponges, cnidarians, worms)

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Animal Kingdom (sponges, cnidarians, and worms)
Grade 8 K-12 based from Grade 8 Science Learner's Module

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Animal kingdom(sponges, cnidarians, worms)

  1. 1. Animal Kingdom SPONGES, CNIDARIANS, WORMS
  2. 2. Review • What you know about animal cells? • How do animals differ in size, shape or habitat? • How do they respond to their environment?
  3. 3. Characteristics • Multicellular • Eukaryotic • Have no cell walls • Have cells that transmit messages.
  4. 4. Q42. In you observation, how are animals distinguished from the other groups as to their reaction to stimuli?
  5. 5. 2 Big Groups of Animals 1. Invertebrates – without backbones 2. Vertebrates – with backbones
  6. 6. INVERTEBRATES 1. 2. 3. 4. 5. 6. 7. 8. Sponges Cnidarians Flatworms Roundworms Segmented worms Mollusks Echinoderms Arthropods
  7. 7. SPONGES - - Simplest animals Live in shallow and deep ocean Young sponges are motile, adults are attached to rocks belong to Phylum Porifera
  8. 8. SPONGES - Body is supported by a “skeleton” called spicules. - used for bathing and washing.
  9. 9. SPONGES - Waste water and materials go out of the sponges through the osculum.
  10. 10. SPONGES (Examples)
  11. 11. SPONGES (Examples)
  12. 12. CNIDARIANS - belong to Phylum Cnidaria Tentacles contain stinging ceslls called nematocysts. hydra jellyfish corals
  13. 13. CNIDARIANS - These poison-filled structures are used for defense and to capture their prey.
  14. 14. CNIDARIANS (Examples) hydra Hydra represents freshwater cnidarians
  15. 15. CNIDARIANS (Examples) jellyfish
  16. 16. CNIDARIANS (Examples) corals Corals form colonies and secrete hard skeleton
  17. 17. CNIDARIANS (Examples) Corals form colonies and secrete hard skeleton. These accumulate to form coral reefs. Coral reef is where fishes and other marine organisms breed.
  18. 18. FLATWORMS - - belong to Phylum Platyhelminthes Flat and ribbon-like organisms Found in freshwater, in wet places and marine waters.
  19. 19. FLATWORMS (Examples) tapeworm planaria
  20. 20. FLATWORMS (Examples) Planaria is an example of a free-living flatworm. It lives in moist surfaces, under rocks in ponds, rivers and even aquariums.
  21. 21. FLATWORMS (Examples) Tapeworms are also parasitic flatworms like flukes without a digestive system.
  22. 22. ROUNDWORMS - belong to Phylum Nematoda Also known as nematodes Have long cylindrical and slender bodies ascaris
  23. 23. ROUNDWORMS - Decomposers in soil in both marine and freshwaters. Other examples include heartworm, trichina worm, hookworm, pinworm
  24. 24. SEGMENTED WORMS - belong to Phylum Annelida Also known as annelids Characterized by a segmented or repeated body parts. Ex. Earthworms, polychaetes, leeches
  25. 25. SEGMENTED WORMS - Annelids have nervous, circulatory, digestive and excretory systems. - Gas exchange only occurs through diffusion.
  26. 26. earthworms leeches
  27. 27. Polychaetes - Most polychaetes are marine living in tubes attached to rocks or sand. - They get floating food through their feathery gills. Example: sandworms
  28. 28. Leeches - - Are blood-sucking annelids. They have suckers that are also attach themselves to their hosts. They secrete an ati-clotting chemical that has been used in medicine.

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