TLS Online TPP Program

#Question id: 10688


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?

#Section 2: Evolution
  1. 90           
  2. 80       
  3. 45   
  4. 120
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TLS Online TPP Program

#Question id: 10693

#Section 1: Ecology

The diagram represents competition between species 1 and species 2 according to Lotka-Volterra model of competition


Given the conditions in the diagram, the predicted outcome of competition is


TLS Online TPP Program

#Question id: 10696

#Section 1: Ecology

In a new area two species A and B was discovered and taking energy from another species X and Y respectively. Following some is life history trait of species.

I- A species is often larger than X

II- Each A species taking energy from many X

III- One Y usually supports populations of B species

IV- Fatality of Y is Mild to severe

Which of the following is correct observation of above species?

TLS Online TPP Program

#Question id: 10697

#Section 1: Ecology

Which of the following is correct observation of above species?


TLS Online TPP Program

#Question id: 10698

#Section 1: Ecology

Parasite and predator have long been associated with their respective host and prey respectively. Which of the following is correct statement?

A. Body size of parasite is always smaller than host but predator usually larger than prey

b- Predator immediately kill their prey but parasite may or may not be 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

TLS Online TPP Program

#Question id: 10699

#Section 1: Ecology

Two plant species co-occur in a prairie. Species X always occurs near species Y. However, species Y often occurs in isolation from species X and produces more seeds when alone than when growing next to species X. Which of the following interactions between species X and could generate this pattern?

TLS Online TPP Program

#Question id: 10700

#Section 1: Ecology

Which of the following most important conclusion from the graph?