3. SYMBIOSIS is the interaction between 2 different organisms living together in an ecosystem.

4. THE FOUR SYMBIOTIC RELATIONSHIPS ARE... PARASITISMMUTUALISMCOMMENSALISM EXTRA PRACTICE ACTIVITY GO BACK TO SPECIFIC QUESTION Click on a Picture Below to Learn About the Relationship EXIT

5. PARASITISM Is a relationship where one organism (parasite) lives in/on the another organism (Host) The Parasite BENEFITS The Host is HARMED For example, the tick in the picture above is a parasite. It benefits by extracting blood from its human host. The human is harmed because EXIT

6. Is a relationship between 2 organisms where both organisms BENEFIT and neither is harmed. The relationship can be long or short term. For example, in the photo above, the host flower benefits by being pollinated by the traveling butterfly. The butterfly benefits from the nectar that it extracts from the flower. Mutualism EXIT

7. COMMENSALISM Is a relationship between 2 organisms where one benefits and the other is neither helped nor harmed. One benefits by receiving transportation, housing, and/or nutrition. For example, in the photo above the barnacles receive transportation from the whale. The whale is neither helped nor harmed by the barnacles. EXIT

8. EXTRA PRACTICE ACTIVITY In the following activity, you will be given a picture scenario. Identify and select the symbiotic relationship (parasitism, mutualism, or commensalism) represented in the picture. EXIT

9. ADVANCE TO NEXT SLIDE RETURN TO PREVIOUS SLIDE GET HELP, DEFINITION QUIT ACTIVITY EXIT SLIDE NAVIGATION INSTRUCTIONS

10. In this photo the “cleaner fish” receives nourishment by dining off of the parasites and remaining food debris in the eel’s mouth. Is this an example of… PARASITISM MUTUALISM COMMENSALISM HELPEXIT

11. That’s CORRECT! Keep up the great work! EXIT

12. Clownfish are frequently found in the tentacles of sea anemones. Sea anemones capture their prey by paralyzing them with their tentacles. However, the clownfish produces a mucus that prevents the tentacles from harming it. By dwelling amongst the tentacles the clownfish receives a protected home. This relationship is an example of … PARASITISMMUTUALISMCOMMENSALISM HELPEXIT

13. That’s CORRECT! Keep up the great work! EXIT

14. The birds in the picture are munching on tiny parasitic insects located on the rhino. The relationship between the birds and the rhino is an example of… EXIT PARASITISM MUTUALISM COMMENSALISM HELP

15. That’s CORRECT! Keep up the great work! EXIT

16. Lampreys are primitive fish with limited digestive systems. They attach to and feed on the body fluids of fish with more advanced digestive systems, often leading to the death of the host fish. This relationship is an example of… EXIT PARASITISM MUTUALISM COMMENSALISM HELP

17. That’s CORRECT! Keep up the great work! EXIT

18. Orchids grow on the branches of high trees. These orchids get more water and sunlight than those on the ground. The tree is unaffected by the orchid’s presence. This relationship is an example of… EXIT PARASITISM MUTUALISM COMMENSALISM HELP

19. That’s CORRECT! Keep up the great work!

20. WAIT!!!! What about the 4 th relationship???

21. PREDATION Predation is one organism (PREDATOR) hunts, kills and eats another organism (PREY)!

22. EXIT