Which one of the following statements is true for trends of the dissolved oxygen (DO) and biological oxygen demand in water stream receiving pollutants from point source? (1) In septic […]
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CSIR NET Life Science Previous Year Questions and Solution on applied ecology
How to Classify Water Bodies as Oligotrophic or Eutrophic Using Physicochemical Features: A Comprehensive Guide
54.Based on the selected physicochemical features of four water bodies given in the following table, which of the following statements is correct? (1) Water bodies A and B are oligotrophic […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Why Global Warming Could Increase Malaria in Temperate Countries: The Science Behind Temperature and Mosquito-Borne Disease
The present global warming trend is expected to resultin an increased incidence of malaria in temperatecountries. The supposed underlying mechanism is that (1) higher temperatures make temperate country people more vulnerable […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Understanding Ozone Hole Detection: The Role of Dobson Units and Global Ozone Monitoring
Ozone concentration in the atmosphere is measured in Dobson units (Du). An ozone hole is said to have occurred when the concentration of ozone in the region falls below 220 […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Competition and Dispersion Patterns in Acacia Savannas: Understanding Regular and Clumped Distributions
Ecologists examined the role of competition for below ground resources (water and nutrients) in the dispersion pattern of trees in the Acacia savannas of South Africa. The figure below depicts […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How Allelopathy Shapes Tree Dispersion: Why Uniform Patterns Emerge
46. A tree species has leaves that contain an allelochemical compound that leaches into the soil and prevents the growth of its own seedlings. What kind of dispersion pattern is […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Why Are Arctic Ozone Losses Lower Than Antarctic? Comparing Polar Ozone Depletion Causes
The losses of ozone over Arctic are significantly lower than that over Antarctica because (1) polar vortex over Arctic is not as tight as over Antarctic. (2) Arctic stratosphere warms […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
What Are India’s National Air Quality Standards for Residential Areas? Understanding Gaseous Pollutant Limits
As per national air quality standard for India, which one of the following options gives correct concentration limits (µg m-3, annual) of various gaseous air pollutants for a residential area? […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Ants and Plant Hoppers: A Classic Example of Multitrophic Interaction in Nature
A researcher observed ants in contact with plant hoppers that were feeding on tree sap. Which of the following conclusions made by her would be correct? (1) This is an […]
CSIR NET Life Science Previous Year Questions and Solution on applied ecology
Which Greenhouse Gas Has the Highest Atmospheric Lifetime? Comparing CO₂, CH₄, N₂O, and CFCs
Which of the following greenhouse gases has got highest atmospheric life time? (1) CO2 (2) CH4 (3) N2O (4) CFCS What Is Atmospheric Lifetime? The atmospheric lifetime (or residence time) […]
