Biology

INTERACTIONS AMONG ORGANISMS

INTERACTIONS AMONG ORGANISMS

Symbiotic Strategies

http://www.teachersdomain.org/resource/nat08.living.eco.humeco.lpsymstra/

Read ?OVERVIEW? and answer the following questions:

1. Write a sentence (using your own words) explaining the focus of this lesson.

2. What are students suppose to ?discover? in this lesson?

3. Re-write the 6 objectives of this lesson (Use your own words)

You may now watch the videos and answer the questions after watching each video.

COLLAPSE OF SHARKS:

Watch this video and answer the following questions on a separate piece of paper

1. Why are shark populations in danger of collapse?

2. How has the relationship between sharks and humans changed over time?

3. What might happen if the shark fin trade continues unchecked?

SHARK AND TURTLE:

Watch the video and answer the following questions

1. How does the turtle protect itself?

2. What relationship is held between the tiger shark and the loggerhead turtle?

SHARKS AND FISHERMAN

1. How have sharks become trained to follow fishermen?

2. Describe how the following species pairs interact in the video segment: fishermen/fish; sharks/fish; sharks/fishermen.

SHARKS IN OUR FUTURE

1. Describe the type of tourism seen in this clip.

2. What benefit do these businesses provide to: sharks? To local populations? To tourists?

3. How might these businesses help prevent the collapse of shark populations?

UNLIKELY TRAVEL COMPANIONS

1. List three ways in which being near a shark might be beneficial to a fish.

2. What is one way that a shark might benefit from a fish (other than as prey)?

3. Classify each shark-fish relationship shown in this video segment as commensalism, mutualism or parasitism.

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Biology