Relationships BetweenOrganisms

Nick Easley

ScienceGrade Level: 5th

Summary: The purpose of this powerpoint is to inform students about interspecific relationships between organisms within an ecosystem. (i.e. mutualism, commensalism, parasitism)

Learning Objective: Given the information in the Powerpoint presentation, students will answer the given questions with 100% accuracy.

Content Standard: GLE 0507.2.2 Explain how organisms interact through symbiotic, commensal, and parasitic relationships.

SPI 0507.2.2 Distinguish among symbiotic,commensal, and parasitic relationships.

Interspecific RelationshipsThere are many organisms in each

ecosystem. Different species of organisms interact with each other through various interspecific relationships. Today we are learning about symbiotic relationships. These include…CommensalismMutualism Parasitism

Symbiotic Relationships

Use the link below to understand the definition of a symbiotic relationship.http://www.thefreedictionary.co

m/Symbiotic+Relationships

CommensalismOne organism benefits from the relationship

while the other organism neither benefits nor is harmed.

MutualismA relationship in which both organisms

benefit each other.

ParasitismIn a relationship of parasitism, one species

harms the other in order to benefit itself.

Symbiotic Relationships

This website shows good interactive examples of mutualism, commensalism, and parasitism.http://www.vtaide.com/png/symbiosis.ht

m

Symbiotic Relationships

://www.youtube.com/watch?v=zSmL2F1t81Q&noredirect=1 Watch this video about symbiotic relationships in an underwater ecosystem.

Select the Correct AnswerWhat is a close, prolonged association

between two or more different organisms of different species that may, but does not necessarily, benefit each member?A.SymbiosisB.MutualismC.CommensalismD.Parasitism

Select the Correct AnswerWhat type of relationship does the clownfish

have with the anemone?

A.MutualismB.CommensalismC.Parasitism

Select the Correct AnswerWhich is an example of parasitism?

A. A bird eating insects off of a buffalo.

B. A tic on a dog’s ear.C.

A shrimp removing parasites from a fish.

Select the Correct AnswerWhat is an example of mutualism?

A. Barnacles anchored to a whale for food.

B. Otters who lie on kelp and eat animals that would eat the kelp.

C. Bed Bugs.

Bonus Question!What famous cartoon fish lived in a

mutualistic relationship with his own house?Hint: He lived there with his dad…

NEMO!

SummaryThe students have watched a video and gone

to websites to learn about symbiotic relationships. They should now have a better understanding of mutualism, commensalism, and parasitism. They also answered questions to exercise their new knowledge.