Category: CSIR NET Life Science Previous Year Questions and Solution on Ecology

Functional response of predators means (1) the number of prey successfully attacked per predator as a function of prey density (2) Regulation of predator population by availability of prey (3) […]

What should be the criteria for choosing prey-predator relationship for long term of biological control? (1) High host specificity and high virulence (2) low host specificity and high virulence (3) […]

Profitability of prey for predator lies in its energy content and (1) Prey defense (2) Palatability (3) Foraging time (4) prey morphology Understanding Prey Profitability Prey profitability refers to the net […]

20. The main function of mycorrhiza is (1) Absorption of water (2) Absorption of phosphates (3) Protection from bacteria (4) Defense from insects The Core Function: Enhanced Nutrient Absorption The primary […]

For two species A and B in competition, the carrying capacities and competition coefficients are KA = 150 KB = 200 α = 1 β = 1.3 According to the […]

The Lotka-Volterra model of competition between species A and B is given by the equations Species A: dNA/dt = rANA (KA-NA-αNB/KA) Species B: dNB/dt = rBNB (KB-NB-βNA/KB) Given that species […]

15. In Lotka and Voltera’s two species competition model: Where N represents population size, r growth rate and K maximum carrying capacity for species 1 and (2) The inter-specific competition […]

According to the classical Lotka-Volterra competition model, which of the following conditions allow for co- existence of two competing species? (1) both species are equally capable of inhibiting each other […]

Three islands have identical habitat characteristics. On first island rodent species A is present at a density 325/km2 Second island has only species B at a density of 179/km2 On […]