Symbiosis isclassified into threetypes: 1. Parasitism; 2. Commensalism;and
Parasitism is a kind ofhunter-prey relationship.The parasite depends onanother organism (host) forfood, protection, andreproduction.Example: tapeworm and human intestine
Tapeworm infestation is an example ofparasitism.
Commensalism is a relationship when an organism benefitsfrom another without harming.The first organism is benefitted while the other is neitherBenefitted nor harmed.Example: Orchid and tree
Orchid attached to the tree is anexample of commensalism.
Mutualism is a kind ofrelationship where bothorganisms benefit. It is a giveand take relationship betweentwo organisms where they canbe benefitted from each other.Example: Anabaena and azolla
Anabaena living with Azolla is anexample of mutualism.
Key Concept: Symbiosis affects thefood chain. If a harmfulkind of relationshipdominates in anecosystem, it will causeproblem. Example: