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TLS Online TPP Program

#Question id: 12148

If asked to find the cause of regular fluctuations in a population's size not associated with seasonal environmental variation, you would probably first seek evidence for: 

#Section 2: Evolution
  1. Time delays in the response of birth and death rates to changes in the environment
  2. Human intervention (such as hunting)
  3. Effects of non-seasonal environmental fluctuations
  4. Loss of heterozygosity in the population caused by inbreeding

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TLS Online TPP Program

#Question id: 12265

#Section 1: Ecology

A metapopulation consists of
TLS Online TPP Program

#Question id: 4613

#Section 2: Evolution

The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change.  Which species is most closely related to species W?
TLS Online TPP Program

#Question id: 12146

#Section 1: Ecology

Which of the following is not a density-dependent factor? 
TLS Online TPP Program

#Question id: 12957

#Section 5: Applied Ecology & Evolution

Dichlorodiphenyltrichloroethane is related to the phenomenon of:
TLS Online TPP Program

#Question id: 4713

#Section 2: Evolution

A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these statements explains why the pigweed reappeared?