The term “abominable mystery” was used by Darwin in the context of origin and diversification of (1) angiosperms (2) microorganisms (3) beetles (4) birds Introduction Charles Darwin, the father of […]
Category: CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
The Origin and Diversification of Angiosperms: The Cretaceous Period
The origin and diversification of Angiosperms was during which geological period? (1) Permian (2) Triassic (3) Jurassic (4) Cretaceous INTRODUCTION Angiosperms, or flowering plants, are the most diverse and ecologically […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Endosymbiotic Hypothesis: Which Statement About the Origin of Eukaryotes Is Incorrect?
Which one of the following statements regarding ‘Endosymbiotic hypothesis of origin of eukaryotes’ is INCORRECT? (1) Mitochondria arose from an α-proteobacterium and plastids arose from cyanobacteria. (2) The event of […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
When Did Mammals First Appear? The Triassic Period and the Dawn of Mammalian Evolution
Which of the following geographical periods is characterized by the first appearance of mammals? (1) Tertiary (2) Cretaceous (3) Permian (4) Triassic Introduction The appearance of mammals is a pivotal […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Chronological Order of Key Events in the History of Life: From Molecules to Cells
Among the following events in history of life a. prokaryotic cell b. eukaryotic cell c. natural selection d. organic molecules e. self replicating molecule Which is the correct chronological order? […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Where Did Life Originate? Recent Studies on Archaea Point to Deep Hydrothermal Vents
Recent studies on Archaea suggest that life could haveoriginated (1) extra terrestrially and seeded through meteoriteimpacts. (2) in shallow coastal areas. (3) in deep hydrothermal vents. (4) in hot, terrestrial […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
The Permian–Triassic Extinction: When Over 95% of Marine Species Disappeared
During which of the following major mass extinction events, over 95% of the marine species disappeared from the planet Earth? (1) Ordovician (2) Devonian (3) Permian (4) Triassic Introduction Earth’s […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
The Devonian Period: The Age of Fishes
20. Which of the following periods is known as “Age of fishes”? (1) Devonian (2) Jurassic (3) Cambrian (4) Carboniferous Introduction The story of life on Earth is […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
What Was Missing? The Essential Ingredient Forgotten in a Miller-Urey Experiment Replication
You wanted to conduct Miller-Urey experiment and used a simplified apparatus with Tungsten electrodes. You heated the glassware at 5000C for 3 hours to remove any organic contaminants. Gases NH3, […]
CSIR NET Life Science Previous Year Questions and Solution on EVOLUTION AND BEHAVIOUR
Why Were the First Living Beings on Earth Anaerobic? The Role of Oxygen and Early Atmosphere
The first living beings on earth were anaerobic because (1) There was no oxygen in air (2) oxygen damages proteins (3) oxygen interferes with the action of ribozymes (4) they […]
