Multiple Choice
Many introducespecies havhadeleterious effects on communities anecosystems because
A) coevolved parasites and pathogens are absent.
B) the introduced species are long-lived.
C) predators prefer the introduced species, and the local prey therefore proliferate to dangerously high levels.
D) the community from which they came lost an important predator, competitor, or parasite.
E) human beings do not know how to appreciate them.
Correct Answer:
Verified
Correct Answer:
Verified
Q17: Most of thenergy within an ecosysteis lost<br>A)when
Q18: Exotic species that arintroduceinto a non-nativhabitat usually<br>A)interbreed
Q19: For most plant ananimal groups, thnumber of
Q20: Which of thfollowing CANNOT bplacein a singltrophic
Q21: Competitivexclusion is thresult of<br>A)parasitism.<br>B)mutualism.<br>C)competition.<br>D)predation.<br>E)commensalism.
Q23: A relationship which benefits flow both ways
Q24: Coexistencof twelvspecies of fruit-eating pigeons in a
Q25: Secondary succession is likely to occur in<br>A)a
Q26: Energy flow in an ecosysteis<br>A)cyclical.<br>B)one-way.<br>C)two-way.<br>D)reversible under different
Q27: Most organisms ardependent upon plants because<br>A)plants produce