defence mechanisms & symbiotic relationships
TRANSCRIPT
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Mechanismsdefence
andsymbioticrelationships
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Defencemechanisms
Adaptations that organisms develop or are born with that help
protect them against predators
try this: write down 2 examples of defence mechanisms from your prior knowledge
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CO-EVOLUTION
how organisms have adapted to and become resistant towards
certain toxins
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protective
Adaptations that help individuals avoid predation
through body coloration
coloration
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CAMOUFLAGE
Dead Leaf ButterflyBrownish & veiny patterned wings that resemble a Leaf
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warning coloration
Eastern Coral Snake(highly venomous)
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mimicrya defence strategy used to imitate the warning colors
of other poisonous organisms
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batesianinvolves a harmless
organism mimicking a HARMFUL one
Syrphid Fly
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mülleriantwo or more poisonous species mimicking each
other
Poison Arrow Frog
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Symbiosis
An ecological relationship between two
species living in direct contact
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parasitismone species lives off of and harms
the host
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parasitismone species lives off of and harms
the host
ectoparasites live outside
of their host
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parasitismone species lives off of and harms
the host
ENDOPARASITES are typically unicellular organisms
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parasitismone species lives off of and harms
the host
A PARASITOID IS A WASP
PARASITE THAT KILLS ITS HOST
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Adzuki Bean Weavil Wasp
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host-parasite cycle
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refer to the activity page!
ectoparasite parasitoid
(tree)
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mutualism
both species benefit from
the relationship
positive effect on growth of
both populations
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mutualism
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mutualism
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refer to the activity page!
mutualistic relationship
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COMMENSALISM
one species benefits,
the other is unaffected
commensal organism
obtains shelter,
locomotion, food, etc.
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COMMENSALISM
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COMMENSALISM
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COMMENSALISMCompetitive : - / -
Host/Parasite : - / +
Predator/Prey : + / -
Mutualistic : + / +
Interspecific Interactions