Tuesday, November 18, 2008

Class Response- Symbiotic Relationships

In purple science class we learned about three symbiotic relationships. Mutualism is a symbiotic relationship between two organisms in which both benefit. Bees and flowers are an example of mutualism, the bees benefit from the flowers that give them pollen and the flowers benefit from the bees that pollenate them. Parasitism is a symbiotic relationship between two organisms in which one benefits and the other is harmed. Dogs and fleas is an example of parasitism, while the fleas are benefiting from getting the best amount of blood, the dog on the other hand is harmed and can get a disease or be injured. Commensalism is the symbiotic relationship between two organisms in which one benefits and the other is neither harmed nor helped. A bird living in a tree is an example of commensalism, the bird benefits from the tree by having safety and shelter, and the tree is not bothered with. I believe that there are Symbiotic relationships all over the world. They occur within our ecosystems, our homes, and our bodies. Without them our world would be history.