Which one of the following statement is not true for edge effect of two ecosystems? (1) Moving corridors connecting two ecosystems are always harmful (2) It has its unique physical […]
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CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Shannon-Weaver Index: Formula and Its Role in Biodiversity Characterization
Shannon weaver index for biodiversity characterization can be represented as (1) H=∑Pi log Pi (2) D= H/log Pi (3) D=∑(n/N2) (4) H=log(N)- ∑log(n) What Is the Shannon-Weaver Index? The […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Understanding the Equation 1-∑Pi²: Simpson Index in Biodiversity Measurement
The equation 1-∑Pi2 represents (1) Shannon weaver index (2) Simpson index (3) Brillouin index (4) Hills equation Biodiversity is a critical indicator of ecosystem health, and ecologists use various mathematical […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Which Biodiversity Index Does Not Show Relative Abundance of Species?
Which of the following index does not show relative abundance of species (1) Shannon-weaver index (2) Simpson Index (3) Brillouin index (4) Species richness Understanding Relative Abundance in Biodiversity Indices […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Comparing Evenness in Plant Communities: How to Interpret Species Abundance Data
Four different plant communities that consisted of the same number of species were taken up for a species diversity study. The following table represents some of the outcomes: Select the […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Simpson’s Index of Diversity: Formula, Interpretation, and Ecological Importance
The probability of capturing an individual of certain species is Pi, then total biodiversity according to Simpson’s Index of Diversity can be represented as (1) ∑(Pi)2 (2) 1- ∑(Pi)2 (3) […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
What Favors the Evolution of Fewer, Larger Offspring? Parental Care and Predator Pressure in Life History Trade-Offs
In life history evolution there is generally a tradeoff between the size and number of offsprings produced. Some conditions are listed below: A. Scarcity of food during the early stages […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Understanding the Shannon Index: A Comprehensive Measure of Biodiversity and Evenness
Shannon index is measure of— (1) Biodiversity evenness (2) Population (3) Pollution (4) Speciation Biodiversity is a cornerstone of healthy ecosystems, reflecting the variety and balance of species within a […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Trade-Offs in Life History Evolution: Seed Size Versus Seed Number as a Classic Example
Which one of the following statements supports the concepts of trade-off in the evolution of life history trades (1) Level of parental care and clutch size are positively correlated (2) […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
How Changes in Alpha Diversity Affect Beta Diversity When Gamma Diversity Is Constant
If α-diversity is diversity of pathogen per host and β-diversity is diversity of pathogen between the two host and ɣ-diversity is overall diversity. If ɣ-diversity is constant and α- diversity […]
