Symbiotic Relationships

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Symbiotic Relationships
Brittany Smith Susan Martin
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BIOLOGY

• STANDARD 2.0
• The student will investigate the interactions of
  organisms within their environment through
  different relationships, population dynamics, and
  patterns of behavior.
• LEARNING EXPECTATION 2.1
• Compare and contrast the different types of
  symbiotic relationships.
• PERFORMANCE INDICATOR LEVEL 1
• Identify Commensalism, Parasitism, and Mutualism,
  given a scenario with examples.
• Link to TN Curriculum Standards

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This Standard May Be Difficult To Teach Because

• Mutualism and Commensalism share similar
  concepts, and can thus be confusing to students.
• This may be the first time students are exposed
  to the three distinct groups of symbiotic
  relationships.

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SYMBIOTIC RELATIONSHIPS

• SYMBIOSIS is the interaction between 2 different
  organisms living together
• HOST- usually the LARGER of the 2 organisms
• SYMBIONT- usually the SMALLER member

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THE THREE SYMBIOTIC RELATIONSHIPS ARE...
Click on a Picture Below to Learn About the
Relationship
PARASITISM
MUTUALISM
COMMENSALISM
EXTRA PRACTICE ACTIVITY
GO BACK TO SPECIFIC QUESTION
EXIT
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PARASITISM

• Is a relationship where the Symbiont lives in/on
  the Host
• The Symbiont (or 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

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Mutualism

• Is a relationship between the host and a
  symbiont, 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 symbiont butterfly benefits from
  the nectar that it extracts from the flower.

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Go Back To
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COMMENSALISM

• Is a relationship between the host and symbiont,
  where the symbiont benefits and the host is
  neither helped nor harmed.
• The symbiont benefits by receiving
  transportation, housing, and/or nutrition.
• For example, in the photo above the symbiont
  barnacles receive transportation from the host
  whale. The host whale is neither helped nor
  harmed by the barnacles.

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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.

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SLIDE NAVIGATION INSTRUCTIONS

• ADVANCE TO NEXT SLIDE
• RETURN TO PREVIOUS SLIDE
• GET HELP, DEFINITION
• QUIT ACTIVITY

EXIT
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In this photo the cleaner fish receives
nourishment by dining off of the parasites and
remaining food debris in the eels mouth. Is this
an example of
PARASITISM
MUTUALISM
COMMENSALISM
HELP
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Thats CORRECT! Keep up the great work!
EXIT
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SORRY MAN, TRY AGAIN
SORRY MAN, TRY AGAIN
EXIT
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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
PARASITISM
MUTUALISM
COMMENSALISM
HELP
EXIT
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SORRY MAN, TRY AGAIN
EXIT
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Thats CORRECT! Keep up the great work!
EXIT
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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
PARASITISM
MUTUALISM
COMMENSALISM
HELP
EXIT
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SORRY MAN, TRY AGAIN
EXIT
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Thats CORRECT! Keep up the great work!
EXIT
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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
PARASITISM
MUTUALISM
COMMENSALISM
EXIT
HELP
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SORRY MAN, TRY AGAIN
SORRY MAN, TRY AGAIN
EXIT
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Thats CORRECT! Keep up the great work!
EXIT
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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
orchids presence. This relationship is an
example of
PARASITISM
MUTUALISM
COMMENSALISM
EXIT
HELP
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SORRY MAN, TRY AGAIN
SORRY MAN, TRY AGAIN
EXIT
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Thats CORRECT! Keep up the great work!
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Image Resources

• www.worldsurface.com
• www.orn.mpg.de/knauer/ bshary/bsharyr.jpg
• www.cbu.edu/.../ image005.jpgcommensalism
• www.cbu.edu/seisen/ExamplesOfCommensalism.htm
• www.agen.ufl.edu/.../ lect/lect_11/lect_11.htm
• www.dfo-mpo.gc.ca/.../ sea-mer/index_e.htm
• www.orchid.or.jp/.../ walke/top-Brazil-1999.html

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RESOURCES

• http//en.wikipedia.org/wiki/Symbiosis
• pbs.org/wgbh/nova/teachers/activities/2009_abyss.h
  tml
• www.cyberlearn.com/coral.htm

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THE END
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