TLS Online TPP Program

#Question id: 11054


In red grouse populations on the grasslands, many males do not acquire territories. Which of the following is least likely to be a valid hypothesis about these male grouse?

#Section 1: Ecology
  1. All of these are valid hypotheses
  2. They are most likely to be younger, less experienced males
  3. They spend less time moving around and thus have more energy for reproduction
  4. They are more likely to acquire mates than territory holders
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TLS Online TPP Program

#Question id: 10633

#Section 2: Evolution

Following some characteristic feature of r selected species

A. late maturity

B. Provision of parental care

C. High mortality during early stages of life

D. large clutch size

What is the above combination is correct?

TLS Online TPP Program

#Question id: 10634

#Section 2: Evolution

Consider a population which is changing from one generation to the next as per the equation N(t) = R*N(t-1), where N(t) represents the size of the population at time t and R is a constant growth parameter. Under what condition is the population likely to go extinct?

TLS Online TPP Program

#Question id: 10635

#Section 2: Evolution

Three important biological parameters – generation time, per capita growth rate (r) and clutch size are a function of the organism‟s body size. Which of the curves (a) or (b) represents the correct relation of each of the parameters to body size?



TLS Online TPP Program

#Question id: 10636

#Section 2: Evolution

The demographic transition model depicts demographic changes from high- to low-level births and deaths in five stages


Stage 1 is characterized by total population numbers are low and the high birth rate is balanced by the high death rate.

B) Stage 2 is characterized by high population growth rate is results of high birth rate however, decline death rate

C) Stage 4 is characterized by decline in the proportion of the population in the reproductive age group and these changes stabilizes population size

D) Stage 3 is characterized by falling birth rates and death rates and population growth rate is zero due to the less numbers of people in the reproductive age group

TLS Online TPP Program

#Question id: 10637

#Section 2: Evolution

Which of the following graph represent logistic growth pattern and exponential growth respectively

TLS Online TPP Program

#Question id: 10638

#Section 2: Evolution


Following some statement is given

A- Mortality rate constant over age group 

B- Greater proportional survival at older age

C. Follow type III survivorship curve

D. Follow type II survivorship curve

Which of the following above statement is correct?