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Symbiosis Review Answer Key

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Mutualism
#1 What is the definition of 'mutualism'? Mutualism is an interaction between two species that benefits both.
#2 The goby fish and the burrowing shrimp share a mutualistic relationship. How is each species benefited in this relationship? The goby gains a place to live and the shrimp gains a watchful guardian.
#3 Give a detailed example of mutualism. See Teacher.
#4 How is mutualism different from cooperation? Cooperation has to do with the same or multiple species working together to achieve the same end goal, where as mutualism is two or more species each gaining something different from the symbiotic relationship.
#5 How is commensalism similar to mutualism? In both mutualism and commensalism there are no negative results from the interactions.
Commensalism
#1 What is the definition of 'commensalism'? Commensalism is a relationship between two species in which one species benefits while the other is not affected.
#2 Lichens benefit from living on a tree, but the tree is not harmed. Which species benefits? Which species in unaffected? The lichen is benefited by structure and the tree is unaffected by the relationship.
#3 Give a detailed example of commensalism. See Teacher.
#4 How is commensalism different from mutualism? Commensalism benefits just one of the interacting species where as in mutualism the relationship benefits both species involved.
#5 How is commensalism similar to parasitism? In both commensalism and parasitism only one species from the relationship benefits from the interaction.
Parasitism
#1 What is the definition of 'parasitism'? Parasitism is a relationship between two species in which one species benefits while the species it depends on is harmed.
#2 In a parasitism relationship there are two organisms involved. The organism that benefits is called the ________________ while the organism that is harmed is called the __________________. The organism that benefits is called the parasite while the organism that is harmed is called the host.
#3 Give a detailed example of parasitism. See Teacher
#4 How is parasitism different from predation (predator-prey). In parasitism the parasite lives off of the host species but will not kill the host. In a predator-prey relationship the "host" organism is killed to consume immediately instead of live off of for an extending amount of time.
#5 How is parasitism similar to mutualism? Parasitism and mutualism generally always have something to do with food or shelter needs.
Species Labeling
#1 What are the three main categories a species would be labeled based on the species origination? There three main species labeling categories are: native, non-native and non-native invasive.
#2 Give an example of a non-native invasive species (with location) and explain how it fits that label. See Teacher.
#3 Give an example of a non-native non-invasive species (with location) and explain how it fits that label. See Teacher.
#4 Give an example of a native species (with location) and explain how it fits that label. See Teacher.
#5 Which of the three (native, non-native, & non-native invasive) would the human species on North America be labeled as? Explain. See Teacher.
Randomness
#1 What does the word 'symbiosis' mean when the word is broken down? "living together"
#2 What is the term used to describe competition between two different species? Interspecific competition.
#3 Mutualism is more common in tropical ecosystems such as rain forests and coral reefs than in other ecosystems. Why do you think this is so? Tropical rainforests and coral reefs have many more species than other ecosystems; more opportunities for mutualism.
#4 If symbiosis where described with emojis, which type of symbiosis would be identified by one toothy-smile face and one solum face with a bandaged head? Parasitism
#5 List and explain the four types of competition between organisms. See Teacher.
Final Question
From yesterday's video, how did the oxpecker fit into each of the three types of symbiosis? See Teacher.