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Coral

Coral. Grade 5 Unit 1. Topics to be Covered…. What is coral? How is coral classified? Coral biology Coral identification Coral conservation. What is reef coral?. Animal, plant, or rock? Animals need to get food Plants make their own food Rocks don’t need food.

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Coral

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  1. Coral Grade 5 Unit 1

  2. Topics to be Covered… • What is coral? • How is coral classified? • Coral biology • Coral identification • Coral conservation

  3. What is reef coral? Animal, plant, or rock? • Animals need to get food • Plants make their own food • Rocks don’t need food

  4. Corals belong to the phylum Cnidaria Medusa or polyp body forms as adults Stinging cells called nematocysts Only one body cavity with a single opening

  5. Examples of Cnidarians Coral Sea Anemones Jellyfish are cnidarians too!

  6. Is it an animal? Reef coral is made of many small individual animals called polyps.

  7. What’s a polyp? tentacle • The basic body form of a coral animal • Structure like a sac with two walls of cells • The open end bears the mouth, which is surrounded by tentacles mouth/anus gastrodermis gastrovascularcavity mesoglea body stalk epidermis

  8. Coral as Predators Coral must eat - it’s a consumer! Nematocysts are used to sting, catch, and kill prey

  9. Stinging cells also protect

  10. Coral Reproduction: Budding

  11. Coral Reproduction: Broadcast Spawning

  12. Check out this video of broadcast spawning!

  13. Is it a plant? It has a plant living inside it! • Polyps have symbiotic algae, called zooxanthellae living in their cells • Zooxanthellae make food for the polyp through photosynthesis

  14. What are zooxanthellae? • Tiny plant cells that live within coral polyps • Provide the coral with food resulting from photosynthesis • In turn, the coral provides protection and access to light for the zooxanthellae

  15. Symbiosis:coral & zooxanthellae • symbiosis: a close relationship between two organisms usually based on food • If the zooxanthellae feeds the coral, what does the zooxanthellae get out of the relationship?

  16. Is it a rock? It’s a type of rock! Coral polyps make a stony structure out of calcium carbonate in which they live

  17. Now you try • Draw a coral on your activity guide • Include a polyp and zooxanthellae • Label mouth, stomach, tentacles • Draw another one next to it • How do you think they communicate?

  18. Common Hawaiian Coral 1 Rice Coral Lobe Coral Antler Coral Cauliflower Coral Finger coral

  19. More Hawaiian Coral Mushroom Coral Black Coral Table Coral

  20. porites lobata Good Guess Antler Coral Rice Coral Finger Coral Lobe Coral Cauliflower Coral Put the correct names with the pictures of the coral porites lobata

  21. Good Guess Antler Coral Rice Coral Finger Coral Lobe Coral Cauliflower Coral Put the correct names with the pictures of the coral

  22. Good Guess Rice Coral Finger Coral Lobe Coral Cauliflower Coral Put the correct names with the pictures of the coral Antler Coral

  23. Good Guess Finger Coral Lobe Coral Cauliflower Coral Put the correct names with the pictures of the coral Rice Coral Antler Coral

  24. Good Guess Lobe Coral Cauliflower Coral Put the correct names with the pictures of the coral Finger Coral Rice Coral Antler Coral

  25. Good Guess Cauliflower Coral Put the correct names with the pictures of the coral Lobe Coral Finger Coral Rice Coral Antler Coral

  26. Good Guess Put the correct names with the pictures of the coral Lobe Coral Finger Coral Cauliflower Coral Rice Coral Antler Coral

  27. Coral is in danger Ocean water is getting warmer When water gets too warm, zooxanthellae leave the coral tissue When zooxanthellae leave, corals lose their color AND food supply CoralBleaching

  28. Coral is in danger:Human Impacts on Coral • Aquarium/Souvenir Trade • Overfishing • Pollution • Tourism

  29. Hawaiian coral needs your protection • It has no voice • Speak up to educate others about our beautiful coral

  30. The End

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