Cannonball Jelly fish are excellent swimmers, and Portly Spider Crabs often hitch a ride on them. What type of relationship is that?
mutualismNo. In mutualism, both organisms benefit. The jellyfish gets no benefit from the crab's hitchhiking.
commensalismYes. In commensalism, one organism (the crab) benefits, and the other (jellyfish) is not affected. The crab gets free transportation, and the jellyfish is not helped or harmed.
parasitismNo. For parasitism, one organism benefits, and the other is harmed. Neither the crab nor the jellyfish is harmed by this relationship.
predationNo. In predation, one organism eats another. Neither the crab nor the jellyfish gets eaten in this relationship.
Click to see which state standards this question tests, and which of my videos, experiments, and other resources support that topic.
UT.8.II.2.a Categorize the relationships between organisms (i.e., producer/consumer/decomposer, predator/prey, mutualism/parasitism) and provide examples of each.
|Primary Consumers||video, ClosedCaptions|
|Secondary Consumers||video, ClosedCaptions|
|What is a Food Web?||text page|
|Review Food Web-2||practice|
|Review Food Web-1||practice|
|Review Food Web-3||practice|
|Review Food Web-4||practice|
|Review Food Web-5||practice|
|Review Food Web-6||practice|
|Review Food Web-7||practice|
|Review Food Web-8||practice|
|Review Food Web-9||practice|
|Review Food Web-10||practice|
|Review Food Web-11||practice|
|Review Food Web-12||practice|