A hormone facilitates oogenesis in mammals. The same hormone down regulates the transfer of nutrients from the placenta. The likely effect of the hormone on life history strategies is that […]
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CSIR NET Life Science Previous Year Questions and Solution on Ecology
Key Traits of r-Selected Species: Type III Survivorship, Short Life Span, and Density Independence
Which one of the following trait set characterizes best ar selected species? (1) Usually a type lll survivorship curve, short life spanand density dependent mortality (2) Usually a type l […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
What Is Beta Diversity? Understanding Species Diversity Between Ecosystems
34. β-diversity is defined as diversity (1) Between two different ecosystems (2) Overall large area (3) Within a sampling area (4) within a community What Is Beta Diversity? Beta diversity (β-diversity) […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How r-Selection Differs from K-Selection: Traits of Rapid Developers and Early Reproducers
Compared to K-selection, r-selection favours (1) rapid development, smaller body size and early,semelparous reproduction. (2) rapid development, smaller body size and early,iteroparous reproduction. (3) slow development, larger body size and […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Alpha Diversity: Measuring Biodiversity Within a Particular Area or Ecosystem
Diversity within particular area or ecosystem is termed as (1) α-biodiversity (2) β-biodiversity (3) ɣ-biodiversity (4) λ-biodiversity Biodiversity is a cornerstone of ecological research and conservation, and understanding its different […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Understanding the ‘Z’ Value in the Species-Area Relationship Equation
The relationship between species and area of distribution is given by the following equation: S = CAZ where S is the number of species on an island or isolated patch, […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Which Trait Is NOT Typical of r-Strategists? Understanding Life History Patterns in Fast-Growing Species
A species whose life history strategies allow for high intrinsic rates of increase (r- strategist) will also exhibit the following EXCEPT (1) high tolerance for both environmental instability and low-quality […]
CSIR NET Life Science Previous Year Questions and Solution on Community Ecology
Species-Area Relationship: The Correct Graph for Species Encountered with Increasing Area
The graph between area studied and number of species encountered will be Analyzing the Graphs Let’s examine the four options in the image: Option 1: This graph shows a rapid increase […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Which Life History Trait Is NOT Typical of Very Small Organisms? Understanding Growth and Reproduction Patterns
One life history trait that is not characteristic of verysmall sized organisms is (1) delayed age at first reproduction. (2) earlier age at first reproduction. (3) high population growth rate. […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Specialist Species: Narrow Niche and High Efficiency of Niche Utilization Explained
A specialist species has a (1) wider niche and high efficiency of niche utilization (2) narrower niche and high efficiency of niche utilization (3) wider niche and low efficiency of […]
