Researchers in the Netherlands studied the effects of parental care giving in European kestrels over 5 years. The researchers transferred chicks among nests to produce reduced broods (three or four chicks), normal broods (five or six), and enlarged broods (seven or eight). They then measured the percentage of male and female parent birds that survived the following winter. (Both males and females provide care for chicks.) Which of the following is a conclusion that can be drawn from this graph?

#Question id: 10632

#Section 1: Ecology

Three different population growth pattern related to population density are shown in figure

#Question id: 10634

#Section 1: Ecology

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?

#Question id: 10635

#Section 1: Ecology

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?

#Question id: 10640

#Section 1: Ecology

Given below is a graphical representation of plant life histories based on Grime's model in which disturbance and competition are the important factors

Which of the following options correctly represents A, B and C, respectively in the figure above?

#Question id: 10642

#Section 1: Ecology

Which curve best describes survivorship in a songbirds and marine crustacean that molts respectively?

#Question id: 10643

#Section 1: Ecology

Population of ground squirrels has an annual per capita birth rate of 0.06 and an annual per capita death rate of 0.02) Estimate the number of individuals added to (or lost from) a population of 1,000 individuals in one year.