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Host (biology): Quiz


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Question 1: Examples of such interactions include a cell being host to a virus, a legume plant hosting helpful nitrogen-fixing bacteria, and ________ as hosts to parasitic worms, e.g.

Question 2: For example, sludge worms are sometimes considered "intermediate hosts" for ________, even though it is known that the parasite causing the disease reproduces sexually inside them[1].
Fish diseases and parasitesKudoa thyrsitesMyxobolus cerebralisSea louse

Question 3: For trypanosomes, the cause of sleeping sickness, ________ are the primary host, while the tsetse fly is the secondary host.
Human evolutionHumanHomoMind

Question 4: In the case of human parasites, the host range influences the ________ of the parasitism or disease.
NutritionPublic healthHuman nutritionEpidemiology

Question 5: Cestodes (tapeworms) and other parasitic ________ have complex life-cycles, in which specific developmental stages are completed in a sequence of several different hosts.

Question 6: In Trichinella spiralis, the roundworm that causes trichinosis, a host has both reproductive adults in its digestive tract and immature juveniles in its ________, and is therefore considered both an intermediate host and a definitive host.
MuscleTorsoFasciaHead and neck anatomy

Question 7: In biology, a host is an organism that harbors a parasite (that is, a virus, a ________, a protozoa, or a fungus), or a mutual or commensal symbiont, typically providing nourishment and shelter.
Gram-negative bacteriaGram-positive bacteriaCorynebacteriumBacteria

Question 8: In ________, a host plant is one that supplies food resources and substrate for certain insects or other fauna.
BiologyFlowering plantEcologyBotany


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