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TLS Online TPP Program

#Question id: 9190

What is the probable role of salicylic acid in the defense responses of plants?

#Section 2: Evolution
  1. destroy pathogens directly
  2. activate systemic acquired resistance of plants
  3. close stomata, thus preventing the entry of pathogens
  4. activate heat-shock proteins
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TLS Online TPP Program

#Question id: 3256

#Section 2: Evolution

There are three alleles, A1, A2, and A3, whose frequencies are equal abundance. According the Hardy-Weinberg equilibrium
TLS Online TPP Program

#Question id: 3458

#Section 4: Behavioural Ecology

Which of the following examples reflects the concept of optimal foraging?
TLS Online TPP Program

#Question id: 10625

#Section 2: Evolution

Find out density of three different fish population by mark recapture method? Following is a density of capture and recapture fish? 


Which of the decrease order of their relative abundance? 
TLS Online TPP Program

#Question id: 3386

#Section 2: Evolution

Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of homology?

a) Dogs and wolves have very similar morphologies.

b) Convergent evolution has occurred.

c) Dogs and wolves not shared more recent common ancestor

d) Dogs and wolves shared a more recent common ancestor
TLS Online TPP Program

#Question id: 10664

#Section 1: Ecology

dN/dt = rN (K-N/K ) The logistic equation above is used to describe the rate of change of a population, N, with time, t, Where r is the intrinsic rate of increase and K is the carrying capacity. What is value of per capita growth rate when population size is 200 individuals? ( K= 400, r =.25)