Biological species concept cannot be applied on (1) Parthengenetic species (2) Sympatric species (3) Species producing viable hybrids (4) Species of aquatic ecosystem The biological species concept is one of the […]
Blog
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Allopatric Speciation: How Geographical Isolation Leads to the Formation of New Species
The formation of 2 species from one parent population due to geographical isolation will be termed as- (1) Allopatric speciation (2) Sympatric speciation (3) Parapatric speciation (4) Peripatric speciation […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Wings of Insects and Bats: A Definitive Example of Convergent Evolution
The wings of insects and the wings of bats represent a case of (1) divergent evolution (2) convergent evolution (3) parallel evolution. (4) neutral evolution. The evolution of flight […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
What Homologous Structures Like Human Forelimbs and Whale Flippers Reveal About Evolution
Fore limb of human and flippers of whale are embryologically homologous structures. What does the study of homologous structures tell us about evolution? A. This is the example of adaptive […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
What Is NOT True About Homologous Characters? Understanding Homology in Evolution
Which one of the following statements is NOT TRUE about homologous characters? (1) Similar traits may not be homologous (2) Similar traits may be a result of convergent evolution (3) […]
Education
Homology and Analogy: Decoding Evolutionary Relationships and Processes
In order to study evolutionary relatedness between two given individuals, homology and analogy are considered. By this study we may observe the following possible information: A. Presence of homologous structures […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Why Flufftails on Pacific Islands Show Low Tail Colour Variation: Explanations and Exceptions
Flufftails in mainland Asia show high variation in tail colour. However, in the far out Pacific island, the flufftails show very little variation in tail colour. This variation in tail […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Insect and Bird Wings: A Prime Example of Convergent Evolution Driven by Flight Adaptations
Wings of insects and birds have become flat, large and stream lined, due to common requirement of flight. This is an example of (1) Convergent evolution (2) Parallel evolution (3) […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Insect Wings and Bird Wings: A Classic Example of Convergent Evolution
Insect wing and bird wings are example of (1) Coevolution (2) Convergent evolution (3) Divergent evolution (4) Parallel evolution The evolution of flight is one of nature’s most remarkable […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Genetic Drift in Small Populations: Rates of Allele Fixation and Loss per Generation
In several populations, each of size N =20, if genetic drift results in a change in the relative frequencies of alleles, A. What is the rate of increase per generation […]
