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Symbiosis
Symbiosis
• Close (intimate) and often long-term interactions between different biological species
• Therefore predation is NOT an example of symbiosis
Symbiosis
• Classified into categories by analyzing degrees of “benefits” for symbionts involved
Symbiosis
• Classified into categories by analyzing degrees of “benefits” for symbionts involved
BOTH
BENEFIT
ONE BENEFITS,
OTHER HARMED
ONE BENEFITS,
OTHER NOT AFFECTED
Symbiosis
• Classified into categories by analyzing degrees of “benefits” for symbionts involved
MUTUALISM PARASITISM COMMENSALISM
BOTH
BENEFIT
ONE BENEFITS,
OTHER HARMED
ONE BENEFITS,
OTHER NOT AFFECTED
Mutualism
Insects and Flowering plants
Lichen
Cleaner Shrimp and Moray eel
Commensalism
Epiphytic Plants
Hermit Crab
Remora
Parasitism
Dodder entwined around field bindweed
Tapeworm
Mosquito
Flea
Classifying Symbiosis… a tricky task
What type of symbiosis best fits this example?
Test your Knowledge:
• On ¼ piece of paper… answer these two questions
Your answer choices:
• Mutualism
• Commensalism
• Parasitism
• Predation
Whale • Often have barnacles
attached to their skin
• The whales function
normally whether or not
barnacles are present
Barnacle • Larva must attach to a surface
• Competition for living space
is fierce
• Feed by filtering water
for plankton
#1. What is this relationship?
#2. What is this relationship?
Indian Pipe Plant
• White (non-photosynthetic)
• Always found near the roots
of large trees (oak, maple) or
their stumps
Oak Tree
• Oak trees with Indian Pipe
presence often have diminished
flowering and seed production Indian Pipe on ground near Oak Tree roots
HOMEWORK FOR TOMORROW
• Reflection question:
Consider your relationship with your parents… classify it as mutualism, commensalism, or parasitism.
Most importantly – explain your reasoning!!