Biological relationships

• Symbiosis: living together of unlike organisms
• What are the 3 forms of symbiosis?

  Commensalism, mutualism, and parasitism
• Commensalism: symbiotic relationship in which 2 species living together and one species benefits from the relationship without harming or benefiting the other.
• What do you call the living thing that benefits during commensalism?

  Commensal
• Commensalism is what type of relationship?

  one-way relationship
• Give an example of commensalism?

  Entamoeba coli in the human GIT
• What are the 2 forms of protozoans?

  cysts and trophozoites
• Among the 2 types of protozoans, which is the immature one?

  cysts
• Among the 2 types of protozoans, which is the mature one?

  Trophozoites
• Mutualism: 2 organism mutually benefit from each other
• Give an example of mutualism?

  Flagellates in the termites GIT
• Parasitism: A symbiotic relationship where one organism, the parasite lives in or on another, depending on the latter for its survival and usually at the expense of the host.
• In parasitism, what do you call the living organism that harms the host?

  Parasite
• Give an example of parasitism?

  Entamoeba histolytica in human GIT
• Entamoeba histolytica in human GIT can cause what?

  amebic colitis
• Amebic colitis: inflammation in the inner lining of the colon
• col: colon
• itis: inflammation