SYMBIOSIS NOTES

Relationships among organisms in a community:Predation One population (predator) captures and

feeds upon another population (prey)Competition Two populations struggle for the same

resourceSymbiosis When one species lives in close

association with another species over a period of time

3 TYPES OF SYMBIOSIS

MUTUALISMRelationship in which both species benefit

MUTUALISMEx. Honeybees/ Flowers

MUTUALISMEx. Ostrich/ Gazelle

PARASITISMRelationship where one

species is helped and the other is harmed

PARASITISMEx. Dogs/Ticks

PARASITISMEx. Mistletoe/

Spruce Tree

COMMENSALISMRelationship in which one

species benefits and the other is neither harmed nor helped

COMMENSALISMEx. Whale/Barnacle

COMMENSALISMEx. Hermit Crab/ Snail Shell