TLS Online TPP Program

#Question id: 10619


Which of the following is incorrect?

#Section 2: Evolution
  1. age-specific rates of survival and fecundity remain unchanged; the population eventually assumes a stable age distribution
  2. Type III survivorship curve is the result of a high initial survival rate, which then falls off abruptly with age as the age-specific mortality rate increases
  3. The natural enemies hypothesis suggests that natural enemies may reduce densities of the strongest prey competitors
  4. There is indirect proportional of relationship between average plant weight and density in populations, referred to as a self-thinning curve
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TLS Online TPP Program

#Question id: 11249

#Section 1: Ecology

Choose the density-dependent factor that will slow population growth as population size increases.

TLS Online TPP Program

#Question id: 10688

#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 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: 10690

#Section 1: Ecology

Which of following interaction shown in following species of Paramecium?



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?