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TLS Online TPP Program

#Question id: 4713

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?

#Section 2: Evolution

  1. The herbicide company lost its triazine formula and started selling poor-quality triazine.

  2. Natural selection caused the pigweed to mutate, creating a new triazine-resistant species.

  3. Triazine-resistant pigweed has less-efficient photosynthesis metabolism.

  4. Triazine-resistant weeds were more likely to survive and reproduce.

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TLS Online TPP Program

#Question id: 16887

#Section 3: Mathematics and Quantitative Ecology

The confidence level for a confidence interval for a mean is
TLS Online TPP Program

#Question id: 11246

#Section 2: Evolution

Which of the following are mechanisms that help prey avoid being eaten by predators?
TLS Online TPP Program

#Question id: 10600

#Section 2: Evolution

Which of the following is not feature of Type II survivorship curve?
TLS Online TPP Program

#Question id: 12364

#Section 1: Ecology

Which of the following populations is capable of increasing more rapidly than the others?
TLS Online TPP Program

#Question id: 9195

#Section 2: Evolution

Philippe Bouchet and colleagues conducted a massive survey of marine molluscs on the west coast of New Caledonia. For 20% of the total species that were located and identified, only a single specimen was found. What does that suggest about the diversity of molluscs in this area?