TLS Online TPP Program

#Question id: 10701


In community, two species A and B were found. A species have an especially large impact on the structure of entire communities because they are highly abundant while B species are not usually abundant in a community however; exert strong control on community structure by their pivotal ecological roles, or niches. Which of the following is naming of species?

#Section 1: Ecology
  1. Species A is dominant species, species B is key stone species
  2. Species B is dominant species, species A is key stone species
  3. Both species is key stone
  4. Both species is dominant 
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TLS Online TPP Program

#Question id: 10683

#Section 2: Evolution

Which of the following interaction shown in figure

TLS Online TPP Program

#Question id: 10684

#Section 2: Evolution

Which one of the following statements is INCORRECT?

TLS Online TPP Program

#Question id: 10685

#Section 2: Evolution

figure show population growth in two species A ana B . Interaction between


 

TLS Online TPP Program

#Question id: 10686

#Section 2: Evolution

 Following figure are shown figure of predator prey model 


Following some observation are given

A) The number of prey, N, increase at low predator densities, P, and decrease at high predator densities

B) Prey zero isoclines is depends on the ratio of the growth rate of prey to the capture efficiency of the predators

C) Number of predator needed for prey isoclines is depends on the ratio of the death rate of predators to the conversion efficiency of predators

D) Number of predator for prey isoclines depends on the ratio of the death rate of prey to the conversion efficiency of predators

Which of the above observation are true?


TLS Online TPP Program

#Question id: 10688

#Section 2: Evolution

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 of B= 1     β of A= .5       rB= .5         r A= .3                

AN= 500                  BN= 200

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

TLS Online TPP Program

#Question id: 10689

#Section 2: Evolution

Which of the following is correct statement?

A) Body size of parasitoid is always greater than host but parasite usually smaller than host

B) Predator immediately kill their prey however parasitoid never kill their host

C) Intrinsic rate of parasite is faster than host but intrinsic rate of predator is slower than prey

D) Body association time between parasite and host is more than time association between predator and prey