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Porifera and Cnidaria: Key Structures and Characteristics

Explore the fascinating world of Porifera and Cnidaria through identifying structures, classes, and life stages. Learn about spicules, spongin, gemmules, choanocytes, and more in these unique phyla of marine organisms.

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Porifera and Cnidaria: Key Structures and Characteristics

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  1. PORIFERA & CNIDARIAThe answers will be shown when you click the mouse so answer all the questions before you click

  2. Phylum? Porifera

  3. What are these? Spicules Spongin

  4. What is this? Gemmule - Used for asexual reproduction in sponges

  5. Osculum Choanocyte A B Amoebocyte C Porocyte D Spicule E Name the structures (A-E)

  6. Fill in the blanks Phylum Cnidaria • Class Hydrozoa • Class Scyphozoa • Class Anthozoa Phylum Cnidaria • Class _____________ • Class _____________ • Class _____________

  7. Phylum? Class Name the structures the arrows point to What body form is this? Common name? Symmetry? Cnidaria Hydrozoa A) tentacle B) mouth Polyp Hydra Radial A B

  8. Name these parts Mouth Cnidocyte (contains nematocyst) Gastrovascular Cavity Endoderm Ectoderm Mesoglea

  9. Phylum? Class? Names for life stages? A B C Life Stages • Cnidaria - Scyphozoa • Planula larvae • Schiphistoma • Ephyra

  10. Anthozoa - Metridium • Phylum? • Class? • Label parts • Cnidaria • Anthozoa 1 – Tentacles 3 – Pharynx 8 – Gastrovascular Cavity 9 – Pedal Disk

  11. Phylum Cnidaria Class Scyphozoa Phylum? Class? Phylum Cnidaria Class Anthozoa Phylum Cnidaria Class Hydrozoa Phylum Cnidaria Class Hydrozoa Phylum Cnidaria Class Hydrozoa

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