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TLS Online TPP Program

#Question id: 12778

A population of white-footed mice becomes severely overpopulated in a habitat that has been disturbed by human activity. Sometimes intrinsic factors cause the population to increase in mortality and lower reproduction rates in reaction to the stress of overpopulation. Which of the following is an example of intrinsic population control?

#Unit 10. Ecological Principles
  1. Owl populations frequent the area more often because of increased hunting success.
  2. Females undergo hormonal changes that delay sexual maturation and many individuals suffer depressed immune systems and die due to the stress of overpopulation
  3. Clumped  dispersion  of  the  population  leads  to  increased  spread  of  disease  and  parasites  resulting  in  a population crash.
  4. All of the resources (food and shelter) are used up by overpopulation and much of the population dies of exposure and/or starvation.

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TLS Online TPP Program

#Question id: 12245

#Unit 10. Ecological Principles

The graph above illustrates a simplified description of the effect of disturbance on species diversity. Which of the following best explains the graph?
TLS Online TPP Program

#Question id: 12246

#Unit 10. Ecological Principles

The graphs below show that the relationship between atmospheric CO2 and mean global temperature is
TLS Online TPP Program

#Question id: 12247

#Unit 10. Ecological Principles

Which of the following is NOT a hypothesis explaining the advantage of group living? 
TLS Online TPP Program

#Question id: 12248

#Unit 10. Ecological Principles

The graphs below show the survivorship and fecundity curves for two congeneric species, X and  Y, that are found in different habitats. Of the two species, Y is more likely to
TLS Online TPP Program

#Question id: 12249

#Unit 10. Ecological Principles

In Batesian mimicry, a harmless species mimics a harmful or toxic model species. Increasing the relative abundance of the mimic will:
TLS Online TPP Program

#Question id: 12250

#Unit 10. Ecological Principles

Two islands, P and Q, are similar in habitat and other features. They are 100 and 200 km2 in size respectively, but have the same number of species. Which of the following statements can independently explain this observation?
(i)    P is closer to the mainland than Q
(ii)   P is further away from the mainland than Q
(iii)  P has higher speciation rates than Q
(iv) P has lower speciation rates than Q