1. Competition for food cannot occur…
A. Between two populations.
B. Among members of the same population.
C. Among populations whose niches overlap.
D. Between animals from two different ecosystems.
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Anybody Know Anything About Biology?
Posted on October 1, 2012.
i take biology but it is dumb so i don’t care LOL
🙂
Commonsense would suggest that the answer is D.
D if the animals are in two areas that are different there is no competition. Picture your best friend in jail. He can’t leave so will s/he really fight you over the last of the chips?
D. Between animals from two different ecosystems.
Different ecosystem means different habitat and different food, hence no competition.
I see more than one answer; anything except D because different ecosystems would include different types of food, and organisms are usually specialized for their own ecosystems.
A. Two different populations can definitely compete for food; think of populations of two different predatory animals sharing the same ecosystem. There are only so many prey available, so there would be competition for food. This is also true of herbivores. If there is a drought, the competition for grass to eat will be intense between different herbivores, for example.
B. Think of two different prides of lions spread out over the same general area. Again, there are only so many prey animals so I can see the lions competing for food.
C. If the niches overlap, that means the food supply overlaps too, so again, I see competition as a distinct probability.
D is the only answer I would eliminate for the reasons I gave already. Two completely different ecosystems would involve different types of food, and so I don’t see animals from two different ecosystems invading the other area and competing for food unless there is a commonality between the two ecosystems that allows for the same types of prey or grasses and plants to grow, in which case there could be competition. To me, though, different ecosystems mean entirely different food sources and no cross-competition.
i think it should be d
None of the above.
Bad question.
Here’s the answer your teacher wants:
D. Between animals from two different ecosystems.
Why it’s bad:
I live in Los Angeles, which is not the ecosystem where humans are native.
I eat tomatoes, which are from a different ecosystem.
Stink bugs also eat tomatoes. They’re from yet another different ecosystem.
We are therefore in competition for food, and we’re animals from two different ecosystems.
P.S. The stink bugs are winning. They’re smart enough to go for the fruit, and not try the stems or leaves which are poisonous.