Symbiotic Relationships

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Presentation transcript:

Symbiotic Relationships

Table of Contents Date Title Page 2/25/13 Symbiotic Relationships Goal: Students will identify and explain the three types of symbiotic relationships that exist in nature.

Predator? Prey? Predator- The organism that does the killing in a predation interaction Prey- An organism that is killed and eaten by another organism in a predation interaction

Predator? Prey?

Predator? Prey?

Symbiosis Symbiosis-any relationship in which two species live closely together and at least one of the species benefits. There are 3 main types of symbiosis Mutualism Commensalism Parasitism

Mutualism (+,+) Mutualism (+,+) is a relationship where both species benefit. ex. An oxpecker rides and snacks aboard an impala. The oxpecker eat ticks living on the impala’s ears. This interaction is an example of mutualism because both organisms benefit.

Commensalism (+,0) Commensalism- a relationship in which one species benefits ant the other species is neither helped nor harmed This is not very common in nature because two species are usually helped or harmed a little by any interaction

Parasitism (+, -) Parasitism (+,-) A relationship that involves one organism living with, on, or inside another organism and harming it. Ex. Fleas and ticks on a dog

Parasitism Parasite- The organism that benefits from parasitism Usually smaller than the host The parasite does not usually kill the organism it feeds on. If the host dies, the parasite could lose its source of food or shelter Host- The organism that the parasite lives on or in

Apply It! Classify each interaction as mutualism, commensalism, or parasitism. Interaction 1: A remora fish attaches itself to the underside of a shark without harming the shark, and eats leftover bits of food from the shark’s meals. Interaction 2: A vampire bat drinks the blood of horses. Interaction 3: A bee pollinates a flower.

Identify the type of symbiosis: http://www.bbc.co.uk/nature/adaptations/Symbiosis#p00n06sr http://youtu.be/90exkFR2iSM

Got it? I get it! I know now that the three types of symbiosis differ in the following ways: I need extra help with _________________.