If two species of seed-eating finch colonized an island on which there were seeds of only one size, what would Gause’s principle of competitive exclusion predict? a) The finches would hybridize and become one species. b) One finch would evolve smaller beaks and the other would evolve larger beaks. c) One of the finch species would probably disappear from the island. d) The plants would evolve seeds of different sizes

Statements I. Recent studies support competition as suggested in ‘Gauses’s Competitive Exclusion Principle’ II. Gause’s hypothesis says if two species compete for same resources then one will be eliminated by another species III. More recent studies point out that species facing competition might evolve mechanisms that promote co-existence rather than exclusion IV. Gause’s competitive exclusion principle is effective when resources are in excess V. Unlimited resources give better opportunity for adaptation Choose the correct combination of statements

Gause’s competitive exclusion principle is challenged by

Natural selection requires genetic variation, competition for limited resources, overproduction of offspring, and unequal reproductive success.The subset of finches that is capable of eating large seeds, while many others eat small seeds, is an example of which requirement?Multiple Choiceoverproduction of offspringgenetic variationunequal reproductive successcompetition for limited resources

In the competitive exclusion principle, two species compete for limited resources untilMultiple choice question.one species is displaced or dies out.mutation is induced to occur to bring about a change in one of the species.a symbiosis evolves between the two species.a climax community is formed.

After the drought of 1977, researchers hypothesised that on the Galápagos Island Daphne Major, medium ground finches with large, deep beaks survived better than those with smaller beaks because they could more easily crack and eat the tough Tribulus cistoides fruits. A tourist company sets up reliable feeding stations with a variety of bird seeds (different types and sizes) so that tourists can get a better look at the finches. Which of these events is now most likely to occur to finch beaks on this island?Question 4Select one:a.evolution of yet larger, deeper beaks over time, until all birds have relatively large, deep beaksb.evolution of smaller, pointier beaks over time, until all birds have relatively small, pointy beaksc.increased variation in beak size and shape over timed.no change in beak size and shape over timeClear my choice