Tag Archive | "competitive exclusion principle"

Help With A Biology Question?


According to the competitive exclusion principle, two species cannot continue to occupy the same
1. territory
2. niche
3. community
4. population
5. habitat

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Does Yeast Outcompete Bacteria In A Petri Dish?


I apologize for this being so long.
So I’m doing this independent research for AP Biology and it involves growing, identifying, and testing sensitivity to antibiotics for bacteria. Yes it was originally 3 parts, and I finished them all and was about to write the report and get the presentation ready, when I noticed that a fungus was growing on one of the dishes and no bacterial colony growth was visible near it. I did some tests and some observation and based on the results and appearance I concluded that it was Absidia corymbifera or Mycocladus corymbifera as they sometimes call it. Now this got me thinking about Gause’s Competitive Exclusion Principle and I thought maybe I should add a 4th part to my experiment studying the competition between these two organisms given they can only occupy the same niche ie: use the same agar.
My question is, does yeast out-compete bacteria in Lysogenic broth (regular agar) or vice-versa?
I would believe that being eukaryotes and requiring less nutrients (most yeast can grow on sugar water) the yeast would out-compete the bacteria but are there any studies supporting my idea?

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According To The Competitive Exclusion Principle, Two Species Cannot Continuously Continue To Occupy The Exact?


A.habitat.
B.niche.
C.territory.
D.range.
E.biome.

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Competitve Exclusion Principle/ecological Niche Questions!?


-What is the Competitive Exclusion Principle and how does it relate to the concept of the Ecological Niche?
-According to the principle of competitive exclusion, what outcome is expected when two species (or business) with identical niches compete for a resource? Why?

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I Need Some Question Answers On The Biology ?


1- what is the competitive exclusion principle ?
2- Explain how tow similar species of birds could nest in the same tree and yet occupy different niches.
3- Distinguish between a fundamental niche and a realized niche .
4- State why , in the study of competition between two species of barnacles . Semibalanus balanoides was the superior competitor, yet chthamalus stellatus was not excluded from the community.
5- Distinguish between niche and habitat.
6- can an organism’s realized niche be larger than its fundamental niche ? justify your answer .
7- what are the different niches of Chthamalus stellatus and semibalnus balanoides ?
8- what happened in connell’s experiment with cthmalus stellatus and semibalanus balannoides ?

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Give An Example Of The Following?


a. interspecific competition
b. intraspecific competition
c. niche (fundamental/realized)
d. competitive exclusion principle
e. resource partitioning
f. saw tooth curve

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