At a given time, the age class distribution of a population was as shown in figure: Which of the following can be inferred from the figure? (1) Age class 2 […]
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CSIR NET Life Science Previous Year Questions and Solution on Biogeography
Island Size and Distance: Predicting Extinction and Colonization Rates in Island Biogeography
Two islands (A and B) located approximately 180 km and 100 km respectively from the mainland. Island A is 160 sq. km, while Island B is 220 sq. km in […]
CSIR NET Life Science Previous Year Questions and Solution on Biogeography
Dynamic Equilibrium in Island Biogeography: The Balance of Colonization and Extinction
Select the correct statement from the options given below to complete the following. In the 1960s, experiments were conducted to test the theory of island biogeography. The main findings of […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How to Calculate the Next Generation Size in an Age-Structured Population
17.Suppose a population has three age classes. Females in the second and third age classes produce four and three offsprings, respectively. While 50% female in the first age class survive […]
CSIR NET Life Science Previous Year Questions and Solution on Biogeography
The Balance of Colonization and Extinction: The Core of MacArthur and Wilson’s Equilibrium Model of Island Biogeography
The equilibrium model of island biogeography proposed by MacArthur and Wilson assumes that the number of species on an island represents a balance between (1) resource consumption rate and predation […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Which Life Phase of a Small Annual Succulent Has the Lowest Age-Specific Mortality Rate?
The following is the life table of a natural population of a small annual succulent where ‘x’ is its life phase, ‘lx‘ is its survivorship till that stage and ‘dx‘ […]
CSIR NET Life Science Previous Year Questions and Solution on Biogeography
Which Prediction Is NOT Part of Wilson-MacArthur’s Theory of Island Biogeography?
Which of the following is NOT a prediction arising out of Wilson-MacArthur’s -Theory of Island Biogeography? (1) The number of species on an island should increase with its size/area. (2) […]
CSIR NET Life Science Previous Year Questions and Solution on Biogeography
Island Size and Proximity: The Foundations of MacArthur and Wilson’s Equilibrium Theory
According to MacArthur and Wilson’s equilibrium theory, which of the following is true? (1) Larger islands and islands closer to continent are expected to have more species than smaller and […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How to Complete a Hypothetical Life Table and Calculate Net Reproductive Rate (R₀)
Complete the following hypothetical life table of aspecies to calculate the net reproductive rate Ro: The calculated Ro will be (1) 0.75 (2) 1.00. (3) 0.65. (4) 1.15. How […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How to Determine the Net Reproductive Rate (R₀) from a Hypothetical Life Table
Following is the hypothetical life table for species Which one of the following is the correct net reproductive rate (R0) (1) 0.0 (2) 0.3 (3) 0.7 (4) 1.5 How to […]
