BIOL 215 Quiz: Assignment 2 BIOL215 - 2017
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1)In the Arroyo Seco, the Western Toad feeds on beetles, bees, and small aquatic insects. The Bull Frog has been introduced and eats the same foods. The based on this information interaction between these two species can best be described as:
Parasite and Host |
Competition |
Predator and Prey |
Mutualism |
2)Introduced species such as the Polyphagous Shot Hole Borer can damage the communities they are introduced to by:
changing communities to have a uniform distribution |
providing food for native species |
increasing species richness |
spreading new parasites and diseases |
3)Species that compete for the same resources often switch to either use different resources or find ways to reduce competition. Why is this often true?
introduced (exotic species) are always going to be the best competitors |
to avoid parasites |
direct competition harms both species, even the superior competitor |
competition only benefits one of the species |