Symbiosis Notes
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Symbiosis Notes

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Symbiosis Notes




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Slide1

Symbiosis Notes

Slide2

Warm Up

Describe three BENEFICIAL relationships that are a part of your life

Ex. I have a relationship with Mr. Tran, my teacher. He helps me to understand and learn new things

Then imagine placing a:

(+) sign next to the individuals that benefit from the relationship

(-) sign next to the individuals that are harmed by the relationship

(0) next to individuals who are unaffected (neither benefit nor harmed) by the relationship

Slide3

Relationships in Ecosystems

There are many ways that organisms interact with each other within ecosystems

We have previously studied food webs as a way to map the flow of energy through an ecosystem from the sun to top consumers and back to producers again

There are more complex relationships that we will explore next

Slide4

Symbiosis

Symbiosis describes any long-term relationship between two organisms from different species

These relationships always benefit one organism

The other organism may

1) benefit as well

2) be harmed by the relationship

3) neither benefit nor be harmed by the relationship.

Slide5

Mutualism

Mutualism describes a type of long-term relationship between two organisms in which BOTH organisms benefitExample:Clownfish and sea anemonesWho benefits? Who is harmed?Bird eating ticks off of cowWho benefits? Who is harmed?

Slide6

Commensalism

Commensalism describes a type of long-term relationship between two organisms in which one organism benefits, and the other is unaffectedExample:Remora hitching a ride on a sharkWho benefits? Who is harmed?

Slide7

Parasitism

Parasitism describes a type of long-term relationship between two organisms in which one organism benefits, and the other is harmedExample:Parasitic fish “lice” Who benefits? Who is harmed?

Slide8

Homework

Find

2 new examples of each type of symbiosis discussed in class today (mutualism, parasitism, and commensalism

)

Be

sure to describe whether each organism benefits from, is harmed by, or is unaffected by the relationship and

why

You

may use the links provided in the resources and multimedia section

of the class page to

begin your research

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