Age of Fossils older than 1 million year ago is usuallydetermined by- (1) Sediment deposition (2) Mineral deposition (3) Radioactive decay of isotopes in fossil (4) Age of surrounding rock […]
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CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Tracing the Evolution of Eye Spots in Moths: Losses, Gains, and Ancestral States
Following tree represents phylogenetic relationships among species of a moth family. Circles represent species having eye spots on the wings. Other species do not have eye spots. The following interferences […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How to Precisely Date Fossils Less Than 20,000 Years Old: The Role of Carbon/Nitrogen Radiometric Dating
Age of fossils lesser the 20,000 year old can be preciselyestimated by- (1) Carbon/Nitrogen (2) Potassium/Argon (3) Uranium/Lead (4) Uranium/Thorium Introduction Dating fossils accurately is crucial for understanding Earth’s history […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Why Fossils Are Generally Found in Sedimentary Rocks: The Science Explained
Fossils are gencambarally found in- (1) Sedimentary rocks (2) Igneous rocks (3) Metamorphic rocks (4) Ice Introduction Fossils are the preserved remains or traces of ancient life, offering a window […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Nuclear Genome: The Most Reliable Marker for Detecting Hybrids in Plants and Animals
Which one of the following genomes is most appropriate to determine hybrids in plants and animals? (1) Nuclear (2) Mitochondrial (3) Chloroplast (4) Mitochondria and chloroplast Nuclear Genome: The […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Ginkgo biloba: The True Living Fossil Among Ancient Plants
Among the following the living fossil is- (1) Ginkgo biloba (2) Taxus bacata (3) Psilotum (4) Nepenthes khasiana Introduction The term living fossil describes an organism that has remained morphologically similar to […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How Horizontal Gene Transfer Interferes with Sequence-Based Phylogeny
Which of the following processes interferes in sequence-based phylogeny? (1) Horizontal gene transfer (2) Adaptive mutations (3) DNA repair (4) Reverse transcription How Horizontal Gene Transfer Interferes with Sequence-Based […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
Which Organism Is a Living Fossil? Understanding the Concept and Identifying the Right Example
Among the following the living fossil is- (1) Trilobite (2) Peripatus (3) Archaeopteryx (4) Dinosaurs Introduction The term living fossil is both fascinating and often misunderstood. It refers to living organisms that […]
CSIR NET Life Science Previous Year Questions and Solution on Emergence of Evolutionary Thoughts
How to Match Organisms with Their Conservation Status: A Guide for Students
Match the organisms in column A with their status in Column B. (1) A, C are X; B, D are Y (2) A, D are X; B, C are Y […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
How Many Rooted Trees Can Be Formed with Five Taxa? Understanding Phylogenetic Tree Calculations
The table below shows the number of unrooted and rooted trees generated when the number of taxa are three and four, respectively. Number of taxa Number of unrooted trees Number […]
