1. EXOTIC / INVASIVE SPECIES
• An species that is introduced to an area
(usually by humans) who has no
predators.
• Can destroy ecosystems
and collapse food webs.
• Introduced: by accident,
to control another organism
Kudzu vine ->

2. •Symbiotic
•Relationships

3. 3 KINDS OF SYMBIOTIC
RELATIONSHIPS
• Symbiosis- close, long term
association between 2 or more
species.
• Parasitism+/-
• Commensalism +/o
• Mutualism +/+

4. PARASITISM
• Relationship
between
parasite and
host.
• One organism
benefits
• One organism is
harmed

5. COMMENSALISM
• One species
benefits and
the other is
unaffected.
• Ex) barnacles
on a whale

6. MUTUALISM
• A symbiotic relationship in which all
participation species benefit.
• Micorrhizae with plants and fungi absorbs
nutrients for
itself and the
plant.
• Both organisms
benefit
Flowers and insects