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 […]
Category: CSIR NET Life Science Previous Year Questions and Solution on Ecology
CSIR NET Life Science Previous Year Questions and Solution on Ecology
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 […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Commensalism in Nature: The Orchid and Mango Tree Example
An example of the species interaction called commensalism is (1) nitrogen-fixing bacteria in association with legume plant roots. (2) A microbes in living human gut. (3) female mosquito deriving nourishment […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Gause’s Exclusion Principle: Understanding Its Application in Ecology
Gauss exclusion principle applies for (1) Intraspecfiic competition (2) Interspecific completion (3) Predation (4) Niche tolerance What Is Gause’s Exclusion Principle? Gause’s Exclusion Principle states that when two species compete […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Best Indicator of Water Pollution from Human Feces: Why E. coli Stands Out
Among the following which is best indicator of water pollution due mixing of human feces (1) E. coli (2) Trypanosoma (3) Paramecium (4) Bacillus Water pollution caused by the mixing […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Mycorrhizal Fungi and Plants: What Happens When Soil Nutrient Levels Are High?
Mycorrhizal fungi are associated with a large variety of plant species. The diagram below shows the cost- benefit curves from individual plants with or without mycorrhizal fungi associated with the […]
