Post on 18-Dec-2015
Types of relationshipsThere are three
major types of symbiotic relationships. They are classified according to how one species is affected by the other.
CommensalismAn example of
commensalism is the relationship between trees and flowers called orchids.
Commensalisma whale transports
attached barnacles throughout the ocean. The whales are not affected by the bamacles.
MutualismLichen - alga and
fungus. Together these
organisms live as one. The alga supplies the
fungus with sugar, other nutrients, and water.
The fungus protects the alga from intense sunlight and temperature extremes.
Mutualism
Butterfly fishClown fish protect anemones from butterfly fish, while the anemones poison protects clownfish
MutualismAnts and aphids
Ants protect and shelter aphid eggs.
Aphids provide food inn the form of liquid nectar for the ants.
ParasitismA parasite uses its
host as a source of food.
Usually the parasite does not kill its host.
However, the parasite may weaken or sicken the host.
ParasitismSome parasites live
out side the body of the host.
Fleas, ticks, lice, and mites are examples of external parasites.