TLS Online TPP Program

#Question id: 9191


When an arborist prunes a limb off a valuable tree, he or she usually paints the cut surface. The primary purpose of the paint is to

#Section 2: Evolution
  1. minimize water loss by evaporation from the cut surface.
  2. improve the appearance of the cut surface.
  3. stimulate growth of the cork cambium to ʺhealʺ the wound.
  4. block entry of pathogens through the wound.
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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?