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 […]
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CSIR NET Life Science Previous Year Questions and Solution on Ecology
Understanding the Lotka-Volterra Competition Coefficient: What Does α₁₂ < 1 Mean?
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Lotka-Volterra Competition Model: The Key to Coexistence of Competing Species
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Intraspecific vs. Interspecific Competition: Insights from Rodent Populations on Islands
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 […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
What Is the Second Most Abundant Greenhouse Gas After CO₂? Exploring Methane’s Role in Climate Change
Second abundant greenhouse gas after CO2is (1) Methane (2) NOx (3) CFC (4) Ozone Understanding the composition and impact of greenhouse gases is crucial in addressing climate change. While […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Matching Population Growth Patterns to Ecological Interactions: Mutualism, Commensalism, and Parasitism
Growth patterns of two species (grown alone or together) are shown in Figures A and B. Match the growth patterns with the correct type of interaction represented by them (1) […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Why Cyanobacteria Outcompete Green Algae in Eutrophic Lakes: The Role of Nitrogen Fixation
Cyanobacteria out competes the green algae in eutrophic lakes due to organic pollutions because they can (1) tolerate low oxygen level (2) tolerate high phosphorus level (3) fix nitrogen, so […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
How DDT Accumulation Led to the Decline of Brown Pelicans: The Role of Eggshell Thinning
The accumulation of DDT has decreased the populationof Brown Pelican ducks because DDT (1) Altered the ducks’s calcium metabolism in a waythat results in thin eggshells. (2) Directly Killed all […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Interpreting Population Growth Graphs: Evidence of Competition and Its Effects
The following graphs show the population growth of two species P and Q, each growing either alone (a) or in the presence of other species (b). The most important conclusion […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Understanding the BOD Curve in Oxygenated Nutrient Broth Inoculated with Bacteria
If nutrient broth is oxygenated and inoculated by bacteria, then the graph of BOD with time for duration of five days will be When bacteria are introduced into oxygenated nutrient […]
