You observed the two species of barnacles, species 1 and species 2, occupy upper and lower strata of intertidal rocks, respectively. Only when species 2 was removed by you from […]
Tag: CSIR Life Science Previous Year Questions and Solution Environment and Niche Concept
CSIR Life Science Previous Year Questions and Solution Environment and Niche Concept
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CSIR NET Life Science Previous Year Questions and Solution on Ecology
Competitive Exclusion Principle: Validity and Real-World Implications Explained
Gause’s ‘Competitive exclusion’ principle states that two species with identical niches cannot coexist indefinitely. Which of the following statements is the most appropriate regarding the validity of the principle? (1) […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Hutchinsonian Ecological Niche Explained: The Multidimensional Hypervolume Model
The Hutchinsonian concept of ecological niche is based on (1) microhabitat occupied (2) multidimensional hypervolume (3) role played in the ecosystem (4) a combination of role played and microhabitat occupied […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
What Is a Guild? Understanding Species That Exploit the Same Resources in Similar Ways
Which one of the following terms is used for species that exploit the same resources in a similar manner? (1) Guild (2) Taxonomic order (3) Community (4) Assemblage What […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Character Displacement: Explaining Shifts in Bird Beak Size Distributions Across Habitats
The diagram below shows the frequency distribution of three closely related bird species based on their beak sizes, across three different habitat patches A, B and C. All the three […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Character Displacement: The Best Example and Why It Matters in Evolution
Which of the following statements is the most appropriate example of character displacement? (1) Two related species depending on the same prey species avoid competition by feeding at different times […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Ecological Compression vs. Character Displacement: Key Differences and Their Evolutionary Impact
Ecological compression differs from character displacement in that it operates on a (1) shorter timescale and does not involve heritable change. (2) longer timescale and does not involve heritable change. […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Character Displacement Phenomenon Explained: Why Species Look Different When They Live Together
Which statement explains the phenomenon of character displacement? (1) Organism of different species are morphologically similar in different habitat but looks different where they live together (2) Organism of different […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Character Displacement in Birds: Why Beak Size Varies Only When Species Are Sympatric
Certain species of bird shows variation in beak size only when they are sympatric. This is example of (1) Character displacement (2) Natural Selection (3) Ecological variations (4) Mutations […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Moss Ecotypes: How the Same Moss Species Adapts to Different Altitudes
The same species of mosses may have different phenotype adapted to different altitude. They are termed as (1) Ecotype (2) Phenotype (3) Race (4) Ecophene Moss Ecotypes: How the […]
