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Activity 13

Activity 13. Symbiotic Relationships.

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Activity 13

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  1. Activity 13 Symbiotic Relationships

  2. LIMITED LICENSE TO MODIFY. These PowerPoint® slides may be modified only by teachers currently teaching the Science and Global Issues SEPUP course to customize the unit to match their students’ learning levels or to insert additional teaching aides. Modified slides may be used only by the modifying teacher in his or her classroom, or shared with other teachers of Science and Global Issues within the teacher’s school district, with these same restrictions. Modified slides may not be taken out of the classroom or distributed to any non-student person or organization. Except for use with students in the classroom, modified slides may not be published in printed or electronic form, including posting on the Internet. Only text may be modified: photographs and illustrations on the slides may not be modified in any way except to change their size. DISCLAIMER OF WARRANTY. THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (“University”) MAKE NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. University will not be liable for any costs, damages, fees or other liability, nor for any direct, indirect, special, incidental or consequential damages (including lost profits) with respect to any claims by the purchaser or user of Science and Global Issues or any third party on account of or arising from the use or modifications to the slides. Client acknowledges and accepts that University services are provided on an as-is basis.

  3. How would you describe the relationship between a producer and a consumer?

  4. Read the introduction and examine the photo under the Challenge. • How do you think it affects the crab to have the other organisms growing on it?

  5. Challenge • How do organisms gain or lose from their interactions with each other?

  6. Be prepared to share your classification system with the class. • What are the differences and similarities between your original classification system and those of the scientific community?

  7. Analysis 3 • How would the food webs and the symbiotic relationships in the kelp forest be affected if the senorita fish were overfished and were no longer found in the kelp forest?

  8. Analysis 4 • How are the mutualism examples you learned about in this activity similar to organisms in an ecosystem performing photosynthesis and cellular respiration?

  9. Revisit the Challenge • How do organisms gain or lose from their interactions with each other?

  10. Key Vocabulary • amensalism • commensalism • mutualism • parasitism • symbiosis

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