1. What kind of ecosystem would be easiest for a wide variety of species to successfully colonize quickly?
A. A completely empty ecosystem, such as a new volcanic island
B. A highly diverse and highly complex tropical raninforest
C. A volcanic island, 50 years after the eruption, with a partial but wide-ranging collection of species
D. A new community forming on a glacier in the arctic
I would guess either A or C, but I'm really not sure!
2. On average, which kind of species do we expect to successfully colonize a new community first?
A. A plant
B. An animal that eats the plant
C. A mutualist which cooperates with the animal which eats the plant
D. The predator at the top of the food chain
For question 2 I would say A.
3. One species occupies a particular niche in an ecosystem. A new species moves in, which begins to monopolize half of the first species' food types. In response, the original species beings to eat additional food sources but also continues with the portions of its diet unused by species 2. This is an example of:
A. Local extinction
B. Biodiversity
C. Character displacement
D. Allopatric speciation
For question 3, my best guess would probably have to be C.
4. One species occupies a particular niche in an ecosystem. A new species moves in, and completely replaces the first species. This is an example of:
A. Local extinction
B. Biodiversity
C. Character displacement
D. Allopatric speciation
I would guess maybe A for question 4
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