QUESTION 6 A population of rabbits introduced into an island grew rapidly for a

Question

QUESTION 6 A population of rabbits introduced into an island grew rapidly for a few years and then the growth slowed down and stabilized. Why did the population become stable? O Environmental resistance declined. O A bust cycle was about to begin. O The value of r decreased. The carrying capacity was reached. O The rate of immigration declined. QUESTION 7 What evidence did Gause and MacArthur find for the competitive exclusion principle? Arial V 3 (12pt) Path: p QUESTION 8 A population grows exponentially when O the death rate equals the birth rate and immigration is equal to emigration. O the carrying capacity is exceeded. O emigration exceeds immigration and the birth rate equals the death rate. O the birth rate exceeds the death rate and immigration exceeds emigration. O the birth rate and the death rate are equal. QUESTION 9 Some toxic animals are brightly colored, as a means of warning others of their danger. True or False? O True O False QUESTION 10 How does environmental resistance affect a population? Arial V 3 (12pt)

Explanation / Answer

ques 6 - The population of arbbits introduced into island grown faster and later slow down and reached stability because carrying capacity was reached.

ques 7 - competitive exclusion principle is also called Gauses law postulating that two species competing for the same limiting resource cannot co exist at a constant population values.if one species have the slightest advantage over the other, the one with the advantage will dominate in long term.

based on the laborartory competitive experiments ,using two species of paramecium. p.auerilium and p.caudatum. The conditions were to add water and conctant flow of food everyday. Although p.caudatum initially dominated , p. auerilia recovered and subsequently drove p.caudatum extinct through explorative resource competition.Hause let the p.caudatum survive by differing the environmental parameters.

Gause law is valid if the ecological factors are constant.

ques 8 - The population growth exponently when the birth rates exceeds the death rate and immigration exceeds emmigration

ques 9 - true

Aposematism describes the warning colours and other markings gto keep away from the predators , concepting the owner is poisonous and tastes bad.

ques 10- environmental resistance factors are all the things that keep a population of organism from endless increasing.They lower the chances of reproduction , affect the health of organisms and raise the death rate in the population. Environmental resistance factors includes the factors that are biotic (living ) and a biotic ( non living ).

biotic factors like predators , parasitism , lack of food , competition with oother organism and disease. Abiotic factors includes drought , fire , temperature etc.

when environmental resistance push back against the population growth, biotic potential is what a population urges to grow. some species produces a lot of young very often and invest a lot of energy in raising and proteting them , so while the biotic potential helps the population to increase, the environmental resistance keep it away fro increasing relentlessely.

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