SYMBIOTIC RELATIONSHIPSCommensalism

Mutualism

Parasitism

Predation

AIM:HOW CAN WE DESCRIBE SYMBIOTIC RELATIONSHIPS BETWEEN ORGANISMS?

Do now: Match the terms in column A with column B:

A B 1.carnivore a.cow 2.producer b.human 3.herbivore c.bacteria 4.omnivore d.algae 5.decomposer e.snake

SYMBIOTIC RELATIONSHIPS IN A COMMUNITY

Mutualism is a relatioship in which two organisms live in a community and depend on each other.

Both organisms benefit from the relationship. Example: termites living in a dead log, bacteria that lives in the human intestine

MUTUALISM

COMMENSALISM

Is a relatioship in which two organisms live in a community, and one benefits while the other gets no benefit and is not harmed.

Example: orchids plants and trees

PARASITISM

Is a relationship between two organisms in which one is helped and the other is harmed.

The living thing on which the parasite lives is called the host.

PREDATION

One organism benefits and the other is harmed.

An animal that hunts,kills,and eats another animal is a predator.

The predator kills the prey.