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Transcript of 15 16 9/02/14 Levels of Organization Starter: Practice/Application: Notes Connection: Exit:Describe...
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15 169/02/14 Levels of Organization
Starter:
Practice/Application: Notes
Connection:
Exit:Describe three types of community interactions that can affect an ecosystem
Levels of Organization
Organism 1 Organism 2Mutualism, Parasitism, Commensalism,
Predation
1
2
3
4
5
6
9/02/14
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Date Lecture/ Activity/ Lab Page8/27 Syllabus /Notebook Guidelines 1-28/27 Periodic Table/ Formula 3-48/27 Tools/ Measurement 5-68/27 Lab Report/ Investigations 7-88/27 Restroom passes/Homework Log 9-108/28 Testing a hypothesis 11-128/29 Levels of Organization 13-149/02 Symbiotic Relationships 15-16
Table of Contents
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Agenda
O1. StarterO2. Notes
O3. ConnectionO4.Exit
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Symbiotic Relationships
Practice/Application
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Symbiotic Relationships:An Introduction
OClick on the picture of the leaf cutter at the left or on this link to view a video about symbiosis.
OYou must be connected to the Internet to view this video.
Leaf cutter video
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Symbiotic Relationships
ODefinition: A relationship between two kinds of organisms that lasts over a period of time is called symbiosis.
OThe word symbiosis can be broken down into two parts to determine its meaning.O sym means together (like in the words sympathy and
symphony)O bio means life (like in the words biology and biome)
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Types of SymbiosisOThere are five types
of symbiotic relationships.O ParasitismO MutualismO CommensalismO NeutralismO Competition
O Each relationship can be shown using + - or 0.
O The chart below shows these relationships.
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Parasitism
OParasitism is the situation where one organism benefits while the other is harmed.
OA + / - relationship.
Parasitic Isopod on fish
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Commensalism
OCommensalism is where one species benefits while the second species remains unaffected.
OA + / 0 relationship Barnacles adhering to the skin of a whale
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MutualismOMutualism is
where both organisms benefit from the relationship.
OA + / + relationship.The clownfish and sea anemone are an example
of mutualism. Although these anemones stun and devour other species of fish, clownfish are not harmed. Clownfishes were thought to be commensal on the giant sea anemones, but there now is evidence that the aggressively territorial clownfishes chase away butterfly fishes, who eat anemone tentacles.
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Predation O Predation is
where a predator feeds on its prey for food and energy. One organism benefits while the other is harmed.
O A + / - relationship.
A South China tiger (Panthera tigris amoyensis) as the predator feeding on the blesbuck as the prey
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Neutralism and Competition
ONeutralism is the situation where both species remain unaffected.
OA 0 / 0 relationship.
OCompetition is where neither species benefits.
OA - / - relationship.
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Now Try thisA lion stalks a herd of antelope wading in a pond. A flock of water birds on the shore become startled by the sound of the lion’s approach and fly away with a great deal of noise. The bird’s sudden departure gives warning to the antelope, and they are also able to escape safely. What type of relationship exists between the birds and the antelope?
a) Competitionb) Mutualismc) Commensalismd) Parasitisme) Predation
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Try againO For a relationship to be competition,
the end result on both sides of the relationship is a negative. This isn’t the case in this relationship.
O Return to the question.
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Not quiteO If the relationship was mutualistic,
then both sides of the relationship would have a positive result from the relationship. While the antelope did have a positive from the birds (the warning) the birds didn’t get a positive from the antelope.
O Return to the question.
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You are CORRECT!O In the antelope and water bird
relationship, the antelope gets a warning of the coming danger (+) the water birds don’t get anything from the antelope though.
O Next example
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Think about this againO For a relationship to be parasitic, one
organism benefits from the relationship while the other has negative effects from the relationship. In this example the only negative is for the lion, but we are looking at the antelope and water birds.
O Return to the question.
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For PracticeA lichen is a combination of two organisms, an alga and a fungus. The fungus gets its food from the alga while the alga gets water from the fungus. This is an example of which relationship?
a) Competitionb) Mutualismc) Parasitismd) Commensalisme) Predation
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Let’s look at this againO If this were an example of
competition, both of the organisms would be effected negatively. However, in this example neither organism is effected negatively.
O Return to the question.
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Good Job!O You’re right! This is an example of a
mutualistic relationship. The alga gains water from the fungus and the fungus gains food from the alga. Both need each other to live and gain something from the other organism.
O Go to the assignment
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It’s interesting that you think this
O In a parasitic relationship, one organism gains a positive while the other organism receives a negative. In this example, neither organism receives a negative.
O Return to the question.
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Can we talk about the example
O In a commensalistic relationship, one organism gains something positive. The other organism remains unaffected by the relationship. In this example, both organisms are effected by the relationship.
O Return to the question.
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Connection
Do Symbiotic Relationships with partner. Complete chart and put into journal then go put cards in correct
place on board
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Connection Organism
1Organism 2
Mutualism, Parasitism, Commensalism, Predation
1
2
3
4
5
6
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Exit
Describe three types of community interactions that can affect an ecosystem
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15 169/02/14 Levels of Organization
Starter:
Practice/Application: Notes
Connection:
Exit:Describe three types of community interactions that can affect an ecosystem
Levels of Organization
Organism 1 Organism 2Mutualism, Parasitism, Commensalism,
Predation
1
2
3
4
5
6
9/02/14