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level: Level 1

Questions and Answers List

level questions: Level 1

Question	Answer
A(n) ________ lives on or within the host organism for some period of its life.	parasite
Plants often react to attacks on their leaves, stems, fruit, or seeds by forming abnormal structures called ________.	galls. (En galle er en svulstagtig dannelse fremkaldt af forskellige, parasitiske organismer, som lever på planter. Gallen består af væv, som planten har skabt under påvirkning fra den organisme, som lever inde i den).
A relationship between two species in which both species benefit is called ________.	mutualism. (Mutualistisk=gensidig fordel. Parasitisk=ensidig fordel. Obligat= Kan ikke gennemføre livcyklus uden den anden part).
The mutualistic fungi that can live within the roots of certain plants are called ________.	mycorrhiza
A lichen consists of a(n) ________ and an alga (or, in some cases, a cyanobacterium).	fungus
How are fleas (lopper) transmitted between hosts?	via direct transmission. (Andre former kunne være through mutiple hosts, eller via an intermediate vector (hosts)).
Plant parasites that are photosynthetic but draw water and nutrients from their host plant are referred to as	hemiparasites (fx orkide)
Which of the following is the definitive host?	deer
What does this figure explain?	High intensity infection leads to more conspicuous behavior.
Which of the following symbiotic mutualisms involves a fungus? Lichens, corals and zooxanthellae, legume-Rhizobium interactions or gut microbe-ruminant interactions?	Lichens
Which of the following mutualists cannot survive without the mutualistic interaction? Dependent, subordinate, obligate og facultative?	Obligate
How might ants on an acacia tree serve in a mutualistic relationship?	The ants fight off potential herbivores.
What reward do many organisms receive for pollinating flowers?	nectar