TLS Online TPP Program

#Question id: 3423


Following statement regarding divergent evolution?

A- Spreading of same species to different and isolated environments which blocks the gene flow among the distinct populations

B. vertebrate limb of whale and elephant is one example of divergent evolution

C- Both orthologous genes and paralogous genes can be said to display divergent evolution

D- Sympatric speciation leads to divergence of one species in to two are more descendant species

Which of the following combination of above statement are correct?

#Section 2: Evolution
  1. A,B,C,D           

  2. A  ONLY         

  3. A,B ONLY            

  4. A,C,D ONLY

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TLS Online TPP Program

#Question id: 10629

#Section 1: Ecology

Following are density dependent factors

A- Food                            B- space

Which of the following animal and their most important density dependent limiting factor are correct?

TLS Online TPP Program

#Question id: 10630

#Section 1: Ecology

Following is relation between population size with various strategies of species, following is correct figure? 


TLS Online TPP Program

#Question id: 10631

#Section 1: Ecology

To estimate the number of foxes m an area, a researcher conducted a mark-recapture survey. In the fast survey, he caught and marked 90 foxes. In his second survey a week later, he caught 120 foxes of which 40 were marked (recaptures). If you are told that the actual number of foxes in this area is 400, which of the following is a plausible explanation for the anomaly in the researcher's data? 

TLS Online TPP Program

#Question id: 10632

#Section 1: Ecology

Three different population growth pattern related to population density are shown in figure

TLS Online TPP Program

#Question id: 10634

#Section 1: Ecology

Consider a population which is changing from one generation to the next as per the equation N(t) = R*N(t-1), where N(t) represents the size of the population at time t and R is a constant growth parameter. Under what condition is the population likely to go extinct?

TLS Online TPP Program

#Question id: 10635

#Section 1: Ecology

Three important biological parameters – generation time, per capita growth rate (r) and clutch size are a function of the organism‟s body size. Which of the curves (a) or (b) represents the correct relation of each of the parameters to body size?