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SYMBIOTIC RELATIONSHIPS WORDS 17-22 Symbiosis Mutualism Commensalism Parasitism Parasite Host. 17. Symbiosis-. A relationship in which two species exist together and at least one of the species benefits from the interaction
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SYMBIOTIC RELATIONSHIPS WORDS 17-22SymbiosisMutualismCommensalismParasitismParasiteHost
17. Symbiosis- • A relationship in which two species exist together and at least one of the species benefits from the interaction • There are three types of symbiotic relationships: mutualism, commensalism and parasitism
18. MUTUALISM- • A relationship between organisms in which both species benefit from the interaction • Occurs in animals of different species • Key words: both benefit
EXAMPLE OF MUTUALISM: • A sea anemone and a clown fish • The sea anemone benefits because the clown fish attracts other fish and the clown fish benefits because it gets protection
19. COMMENSALISM- • A relationship between organisms in which one species benefits and the other species neither benefits nor is harmed by the interaction • Key words: one benefits, one unaffected
EXAMPLE OF COMMENSALISM: • A shark and a remora • The remora benefits because it gets pieces of leftover food and the shark is unaffected
20. PARASITISM- • A relationship between organisms in which one species benefits and the other is harmed by the interaction • Key words: one benefits, one is harmed
MORE EXAMPLES OF PARASITISM: • A human with lice • The lice benefits because it gets food and a place to live on the human. The human is harmed • A cat and roundworm is another example. Who benefits? Who’s harmed?
21. PARASITE- • An organism that lives off the energy of other living things • The “bad guy” in parasitism • The flea is a parasite
MORE EXAMPLES OF A PARASITE: • The roundworm is a parasite in the example of a cat and a roundworm • Lice is the parasite in the human and lice example of parasitism
22. HOST- • An organism that a parasite lives in or gets nourishment from • The “good guy” in the examples of parasitism
EXAMPLES OF HOSTS: • The human in the human and lice example • The cat in the cat and roundworm example