Transcript Slide 1

Warm-Up: For each organism below,
list 2 biotic and 2 abiotic factors that
might affect it.
Homework
Symbiosis HW
Symbiosis
Sym = together Bio= living
A symbiotic relationship is when 2
organisms live together and at least one of
them relies on the other
Mutualism:
A symbiotic relationship where both
species benefit
Keywords: Equal benefit
Example: Humans and Bacteria
Commensalism:
A relationship that benefits one organism and
neither hurts nor helps the other
Keywords: one benefits, other unaffected
Example: Whales and Barnacles
Parasitism:
A relationship where
one organism
(parasite) feeds on
the tissues or body
fluids of another
organism (host)
Keywords: one hurts the other
Example: Lamprey and Fishes
Predation:
Example: Boa and Gazelle
A relationship where one
organism actively hunts
another organism
Keywords: one hunts another
Scavenger:
Organisms that feed on the bodies of
dead organisms
Example: The Vulture
Keywords: one eats another’s scraps
Keywords: both compete
Competition:
When two or more organisms compete
for the same resource
Example: Humans and Shorebirds on the eastcoast!
Human Parasites
ewww…
Brainpop
LETS Review
Essential Question
List the types of symbiotic relationships
and give an example of each.
Your Assignment
Visit the stations around the room. At each
one, write the organisms involved in the
relationship.
Use 2 of the following faces to represent each

relationship
Justify the symbols and name the type of
relationship.
Complete the analysis and application
questions (extension is extra credit)
Read the article and answer the questions