A species of grass grows around a mine area having patches of heavy metal contaminated soil. Some of the populations of the species grew selectively on the soil that was […]
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CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Allopatric Speciation: How Geographic Barriers Lead to the Evolution of New Squirrel Species
Two populations of squirrels evolved across two regions separated by a large geographic barrier. Over a long period of time these populations are reproductively and geographically isolated from each other. […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Allopatric Speciation: How Geographic Isolation Drives the Emergence of New Species
The speciation in which a population splits into two geographically isolated populations experience dissimilar selective pressure and genetic drift is known as (1) sympatric speciation. (2) parapatric speciation. (3) peripatric […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Sibling Species: Morphologically Similar but Reproductively Isolated Organisms
Which is correct explanation for sibling species? (1) Species which are morphologically different but can interbreed (2) Species which look morphologically similar but reproductively isolated (3) Species which are morphologically […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Understanding the Biological Species Concept: Defining Species by Interbreeding and Fertility
Morphologically similar species when interbreed produce viable fertile offspring. They are considered as single species according to (1) biological species concept (2) evolutionary species concept (3) Genetic species concept (4) […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Reproductive Barriers: The Most Crucial Factor in Speciation of Sexually Reproducing Organisms
Which is most important barrier for speciation in a sexually reproducing organisms? (1) Geographical (2) Reproductive (3) Temporal (4) Ethological Speciation—the process by which new species arise—is a fundamental […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
The Biological Species Concept: Defining Species Through Reproductive Isolation
Which species concept stress mainly on failure of interbreeding to keep them in distinct species (1) Biological species concept (2) Ecological species concept (3) Morphological species concept (4) Phylogenetic species […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How Parasitic Bacteria Drive Rapid Speciation in Insects
If a certain parasitic bacteria on insect prevents cross breeding among them. It will lead into (1) rapid speciation (2) Divergence of insects (3) Extinction of insects (4) No effect […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Why the Biological Species Concept Does Not Apply to Cyanobacteria and Euglenophyta
The biological species concept defines species as a group of populations that are reproductively isolated from others. However, this definition is not applicable to groups where sexual reproduction has not […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Biological Species: The True Definition of a Group That Can Interbreed and Produce Fertile Offspring
A group of organisms that can successfully interbreed and produce fertile offspring termed as (1) Biological species (2) Taxonomic species (3) Morphospecies (4) Sibling species What Is a Biological […]
