Interactions among Living Things worksheet
Name __________________
Date ___________ Class Period _____
Directions: Answer these questions and email the document to Mrs. Powell by Wednesday Day eight.
Part I. Discussion Question
Recall the discussion question which was: Both parasitism and predation are not popular events that occur, how would the ecosystem differ if these two events did not occur?
1. After reading two of your classmate’s responses did you come across a new idea that you had not considered? _____________ If, yes state that idea on the line provided. If no explain what you believe would be the worst thing that could happen if parasitism and predation did not occur on the lines provided. ___________________________________________________________________ ____________________________________________________________________
Part II. Video clips of Interactions
In the PowerPoint on slide five there were a series of video clips you viewed. Answer the questions about the clips. If you need to look back at the clips click on the hyperlink above entitled “Video clips of Interactions.
Clip 1: Shark and Turtle
2. What relationship is held between the tiger shark and the loggerhead turtle? ____________________________________________________________________
Clip 2: Unlikely Travel Companions
3. Classify each shark-fish relationship shown in this clip as commensalism, mutualism, or parasitism. ___________________________________________________________ ____________________________________________________________________ ____________________________________________________________________
Clip 3: Sharks and Fishermen
1. Describe how the following species pairs interact in the clip: fishermen/fish; sharks/fish; sharks/fishermen.
Part III. Ecology Lab
If all of the predators are removed and each herbivore is assigned one plant to eat, what eventually happens to the herbivore C population? What do you think may have caused this change in their population? _____________________________________________________________
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Do the other populations ultimately increase? What do you think is happening as a result of the predators being removed from the ecosystem? ____________________________________ _________________________________________________________________________
