You are sampling birds in a forest community to determine species diversity of birds in this region. How would you assess the sampling effort to ensure that you have obtained […]
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CSIR NET Life Science Previous Year Questions and Solution on Ecology
Understanding Density-Dependent, Density-Independent, and Inversely Density-Dependent Factors in Population Regulation
An observation was made on a species experiencing three factors A, B and C in order to infer a density dependent population regulation by a factor. The following graph shows […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Species Accumulation vs Rarefaction Curves: Understanding Their Roles in Biodiversity Assessment
Given below are the species accumulation curves and rarefaction curves measured in an ecological community. Which one of the following statements is INCORRECT about the two curves? (1) Species accumulation […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Graphical Representation of Bacterial Decline Under Depleting Nutrient Conditions
70 The correclining exponentially under depleting t graphical representation of a bacteria decnutrient condition is Introduction Bacterial growth and decline are fundamental concepts in microbiology and ecology. While much attention […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Understanding Hypotheses Linking Species Richness and Community Services: Graphical Representations Explained
Following are the graphical representation of various hypothesis proposed for explaining the possible relationship between the species richness on (X) axis and community services on (Y) axis. Which of the […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Which Factor Is Not Density Dependent? Understanding Population Regulation in Ecology
Among the following which is not an density dependent factor effecting population (1) Competition (2) Food (3) Temperature (4) Nutrients Introduction Population sizes in ecosystems are regulated by a mix […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
How to Assess Sampling Adequacy in Forest Tree Diversity Studies: The Power of Species Accumulation Curves
A field biologist is sampling tree species in a forest area to estimate tree diversity. What method can be employed to decide if his sampling effort is adequate to estimate […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Which Ecological Factor Is Not Density Dependent? Understanding Population Regulation
Among the following ecological factor which is not a density dependent factor (1) Food (2) Predation (3) Disease (4) Extreme temperatures Introduction Population sizes in nature are regulated by a […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Why Do Populations Fluctuate Around Carrying Capacity? The Role of Density-Dependent Factors
Temporary fluctuation in number of individuals aroundthe carrying capacity in most of populations is due to (1) density dependent factors (2) density independent factors (3) Bottle neck phenomenon (4) Interspecific […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How Age at First Reproduction, Fecundity, and Population Growth Rate Interact: Key Insights from Population Ecology
The graph below shows the relationships of per capita population growth rate (r), fecundity (b) and age at first reproduction (α) in an animal species. What is the most important […]
