Symbiosis

A relationship between two organisms in which one organism benefits and the other is not affected...

• Mutualism

• Competition

• Parasitsm

• Commensalism

Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle are unaware if they are there or not.

• mutualism

• commensalism

• competition

• parasitism

What does symbiosis mean?

• Living separately, no relationship between 2 species

• Living together, close relationship between 2 species

• Living separately, long distance relationship between 2 species

• When one species kills and eats another

A relationship between two organisms in which both organisms benefit

• Mutualism

• Competition

• Parasitsm

• Commensalism

Fungi form lichens (a small plant) by living in a close relationship with algae. The fungus provides a protective home for the algae, and gathers nutrients from rainwater. The algae gathers energy from the sun using photosynthesis. Both organisms share nutrients with each other.

• commensalism

• mutualism

• parasitism

• predation

Honeyguide birds find a bee hive, then chatter loudly to attract the Honey badger. They fly toward the hive making sure the badger is following. Upon arrival at the bee hive, the badger tears open the hive and feasts on the honey. Then the Honeyguide bird feeds on the remaining wax and larvae.

• commensalism

• mutualism

• parasitism

• predation

Gall Insects lays their eggs in the leaves or branches of Oak trees. Oak trees provide shelter and food to the insect larvae.

• commensalism

• mutualism

• parasitism

• predation

Hookworms can enter the body of animals or even humans. The hookworm attaches to the lining of the intestinal wall and feeds on blood. Its eggs are ejected into the digestive tract and the larvae (young hookworms) that hatch live off of the host’s blood. The host can suffer from blood loss, anemia and iron deficiency.

• commensalism

• mutualism

• parasitism

• predation

A relationship between 2 organisms in which one organism benefits and the other is harmed

• commensalism

• parasitism

• mutualism

• predation

Organisms that make up the living part of an ecosystem.

• abiotic
• biotic factors
• ecology
• ecosystems