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TLS Online TPP Program

#Question id: 9248

Which of the following is a consequence of biological magnification?

#Unit 9. Diversity of Life Forms
  1. Toxic chemicals in the environment pose greater risk to top-level predators than to primary consumers.

  2. Populations of top-level predators are generally smaller than populations of primary consumers.

  3. The biomass of producers in an ecosystem is generally higher than the biomass of primary consumers.

  4. Only a small portion of the energy captured by producers is transferred to consumers.
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TLS Online TPP Program

#Question id: 3312

#Unit 11. Evolution and Behavior

Hardy-Weinberg equilibrium, the frequencies of the two alleles A1 and A2 is 0.4 and 0.6. When you consider A2 is dominant allele of genetic disorder. The frequency of defected individuals, in population size 1000 is
TLS Online TPP Program

#Question id: 3313

#Unit 11. Evolution and Behavior

Which one of the following statement is incorrect for the process of speciation?
TLS Online TPP Program

#Question id: 3314

#Unit 11. Evolution and Behavior

The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 14 gm to 16 gm. Which of the following natural selection operate on this species?
TLS Online TPP Program

#Question id: 3315

#Unit 11. Evolution and Behavior

Which one of the following statements is TRUE for Negative-frequency dependent selection?
TLS Online TPP Program

#Question id: 3316

#Unit 11. Evolution and Behavior

There are two population A (N = 500) and B (N=50). Due to genetic drift, both populations will lose its genetic diversity in a generation. Such losses become magnified over many generations. After 20 generations, what will be lose its original variation?
TLS Online TPP Program

#Question id: 3317

#Unit 11. Evolution and Behavior

Which of the following statements is NOT correct regarding effect of genetic drift?