Transcript Symbiotic Relationships

• SYMBIOSIS is the interaction between 2
different organisms where at least one
benefits
– HOST- usually the LARGER of the 2
organisms
– SYMBIONT- usually the SMALLER member
THE THREE SYMBIOTIC
RELATIONSHIPS ARE...
Click on a Picture Below to Learn About the
Relationship
PARASITISM
MUTUALISM
COMMENSALISM
EXTRA PRACTICE ACTIVITY
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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.
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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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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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QUIT ACTIVITY
In this photo the “cleaner fish”
receives nourishment by dining
off of the parasites and
remaining food debris in the
eel’s mouth. Is this an example
of…
PARASITISM
MUTUALISM
COMMENSALISM
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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
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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
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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
HELP
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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
orchid’s presence. This
relationship is an example of…
PARASITISM
MUTUALISM
COMMENSALISM
HELP
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SORRY MAN, TRY AGAIN
SORRY MAN, TRY AGAIN
EXIT
That’s
CORRECT!
Keep up the
great work!
Image Resources
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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
RESOURCES
• http://en.wikipedia.org/wiki/Symbiosis
• pbs.org/wgbh/nova/teachers/activities/2009_abyss.html
• www.cyberlearn.com/coral.htm
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