Environmental Science with Ms. Kohnke Color of the day: RED How species interact Environmental Science with Ms. Kohnke Color of the day: RED

Objective Students will understand and identify the meaning of symbiosis and its variations

Symbiosis A close relationship between two different organisms Overtime, species in close relationships may coevolve. These species may evolve adaptations that reduce the harm or improve the benefit of the relationship.

Major types of Symbiosis Competition Predation Parasitism Mutualism Commensalism

Types of Symbiosis Interaction Species A Species B Description Example Competition Harmed Each species negatively affects the other Fox and coyote are predators of the same prey Predations and Parasitism Benefited Species A feeds on species B Coyote feeds on rabbits Tick feeds on coyote Mutualism Each species is helpful to the other Bee pollinates a flower and gets pollen; bee spreads pollen Commensalism Unaffected Species A benefits from species B, but B is unaffected Robin makes nest without affecting the tree

Competition Relationship where both species, try to use the same resource, where both are negatively affected Give me an example

Predation Relationship where one species (predator) feeds on anther species (prey) A predator of one species can be prey to another Most organisms have evolved a way to avoid or defend against predators Give me an example

Parasitism Relationship where one species (parasite) benefits from the other species (host) who is usually harmed Give me an example

Mutualism Relationship where both species benefit Give me an example Many species depend on the other for survival and could not exist without the other Give me an example

Commensalism Relationship where one species benefits and the other is unaffected Give me an example