SYMBIOTIC RELATIONSHIPS

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Mutualism

Symbiosis

Commensalism

Parasitism

What is symbiosis?

Definition: A close relationship between two different kinds of organisms in which at least one of the organisms benefits.

It is usually a relationship that lasts over a period of time .

Types of Symbiosis

There are three types of symbiotic relationships.MutualismCommensalismParasitism

Mutualism A type of symbiosis

in which both organisms benefit from the relationship.

The bee gets a meal and the flower gets help reproducing

Mutualism:Moray eel with Cleaner Fish

Moray eel gets a clean mouth Cleaner Fish gets a meal

Mutualism: Antelope with Oxpecker

Antelope gets parasites removed. Oxpecker gets a

meal

Commensalism• A type of symbiosis

where one species benefits while the second species is neither helped nor harmed.

(it is unaffected)

Cattle and egret.

Commensalism: Cattle w/ cattle egrets

Cattle stir up insects as they eat grass

Egrets hang around and eat insects

Orchids grow on tree branches in rainforests to be closer to sunlight

Parasitism A type of symbiosis

where one organism benefits while the other is harmed.

Usually the parasite lives in or on the host organism. Wasp and caterpillar

Parasites common in dogs

Aphids or “Plant Lice” suck the sap from plants

Do parasites generally kill their host?

Why?