Symbiosis is

classified into three

types:

1. Parasitism;

2. Commensalism;

and

3. Mutualism

Parasitism is a kind of hunter-prey relationship. The parasite depends on another organism (host) for food, protection, andreproduction.Example:

tapeworm and human intestine

Tapeworm infestation is an example of parasitism.

Commensalism is a relationshipwhen an organism benefits from another without harming. The first organism is benefittedwhile the other is neither Benefitted nor harmed.

Example:Orchid and tree

Orchid attached to the tree is an example of commensalism.

Mutualism is a kind of relationship where both organisms benefit. It is a give and take relationship between two organisms where they can be benefitted from each other.

Example:Anabaena and azolla

Anabaena living with Azolla is anexample of mutualism.

Key Concept:

Symbiosis affects the

food chain. If a harmful

kind of relationship

dominates in an

ecosystem, it will cause

problem.

Example:

Frog living in the

Thank You for

watching and

listening

Edmar P. Tiburcio