TLS Online TPP Program

#Question id: 9214


Researchers have been studying a rare population of 87 voles in an isolated area. Ten voles from a larger population were added to this isolated population. Besides having ten additional animals, what benefits are there to importing individuals?

#Section 2: Evolution
  1. There is no benefit other than increasing the overall population size.
  2. Additional voles will strengthen competition and increase the survival of the fittest.
  3. Additional animals would increase beneficial genetic drift.
  4. Additional voles from a distant population will likely increase genetic diversity and reduce inbreeding.

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TLS Online TPP Program

#Question id: 10751

#Section 1: Ecology

Possible interaction between populations in following manner ,which of the following best represent for negative ineteracion ?


TLS Online TPP Program

#Question id: 10752

#Section 1: Ecology

Which of the following is an example of Batesian mimicry?

A) a butterfly that resembles a leaf

B) a nonvenomous larva of a moth that moves like a venomous snake

C) a fawn with fur coloring that camouflages it in the forest environment

D) a snapping turtle that uses its tongue to mimic a worm, thus attracting fish

TLS Online TPP Program

#Question id: 10754

#Section 1: Ecology

Following is different type of interaction was shown in figure. (+: Benefit , - Harm , 0= Neither benefit nor harm) What is interaction between column A & B in each schematic?


TLS Online TPP Program

#Question id: 10755

#Section 1: Ecology

For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000          KB = 1200        α= .5    r A= .3    N1= 500         N2= 200          

According to the Lotka-Volterra model, what is growth rate of species A?

TLS Online TPP Program

#Question id: 10756

#Section 1: Ecology

Which of following is correct about interaction?

A) Population growth of each species is limited more by intraspecific competition than by interspecific competition.

B) The species with the greater initial abundance wins out.

C) Population of each species coexist and reach at stable equilibrium point

D) Population growth of each species is limited by only intraspecific competition


TLS Online TPP Program

#Question id: 10814

#Section 1: Ecology

A Population of N1 species is growing with N2 species with a growth rate (r1) of 0.15 in an environment with a carrying capacity K1 of 400, Density of N1 species 100, density of N2 species 50 competitive efficiency of N2 on N1 species 1.5. What is the approximate growth rate N1 species?