Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 14577
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.

More Questions
TLS Online TPP Program

#Question id: 10574

#Section 1: Ecology

Which of the following statements about the evolution of life histories is correct?
TLS Online TPP Program

#Question id: 5158

#General Aptitude

Find the unit digit in 1! + 2! + 3! + 4! +.................... + 50!
TLS Online TPP Program

#Question id: 11173

#Section 2: Evolution

Chemical signals between individuals of the same species are called
TLS Online TPP Program

#Question id: 10838

#Section 2: Evolution

Fighting over shared resources is called
TLS Online TPP Program

#Question id: 16858

#General Aptitude

She …….. (leave) for Jammu yesterday.