Life Science Mock Test CSIR NET Exam - Part 5

This Quiz is posted with the sole aim of guiding the aspirants of CSIR-NET Exam to the path of success. To sharpen the edges of your own intelligence and practice, in a structured and concrete manner to ensure you definite Success in your endeavor and will Pave your way for a successful career in Teaching (or) Research Profession . All the very best...... Knock the door of success......

1. 
   When a marine fish is placed in fresh water, it dies becuase________.
   
   
   
   
   1.  Exit of water and shrinks
   
   
   2.  Entry of water and it floats
   
   
   3.  Deficiency of nutrients
   
   
   4.  Deficiency of salts
   
   
   
   
   
   
   
   
   


2. 
   Cell or tissue death within a living body is called as __________.
   
   
   
   
   1.  Nephrosis
   
   
   2.  Nepolasis
   
   
   3.  Neutrophillia
   
   
   4.  Necrosis
   
   
   
   
   
   
   
   
   


3. 
   Filtration of blood through the glomerulus of a kidney under normal conditions is _______.
   
   
   
   
   1.  a physical process 
   
   
   2.  a carrier-mediated process
   
   
   3.  an energy dependent process
   
   
   4.  a chemical process
   
   
   
   
   
   
   
   
   


4. 
   Ecosytem is mainly concerned with ________.
   
   
   
   
   1.  species
   
   
   2.  community 
   
   
   3.  energy flow and nutrient recycling
   
   
   4.  population
   
   
   
   
   
   
   
   
   


5. 
   A population’s role in the community or the resources it uses is called its _____?
   
   
   
   
   1.  Community interaction
   
   
   2.  Niche
   
   
   3.  Trophical structure 
   
   
   4.  Habitat
   
   
   
   
   
   
   
   
   


6. 
   The greatest amount of food per acre is produced in the ___________.
   
   
   
   
   1.  tundra
   
   
   2.  grassland
   
   
   3.  rain forest
   
   
   4.  marine biome
   
   
   
   
   
   
   
   
   


7. 
   In India most of plant flowers during spring or summer because
   
   
   
   
   1.  Environmental fluctuations are low
   
   
   2.  Fruit and seed setting must be complete before onset of monsoon
   
   
   3.  It is breeding season for butterflies
   
   
   4.  More solar radiation are available 
   
   
   
   
   
   
   
   
   


8. 
   Biological magnification is maximum in human it proves that human is _________.
   
   
   
   
   1.  More susceptible
   
   
   2.  Major Pollutant
   
   
   3.  Most efficient in storage of reserve food
   
   
   4.  Top consumer in food chain
   
   
   
   
   
   
   
   
   


9. 
   Global warming is due to ______.
   
   
   
   
   1.  Absorption of IR by CO2
   
   
   2.  Absorption of UV by CO2
   
   
   3.  Absorption of IR by ozone
   
   
   4.  Absorption of UV by Ozone 
   
   
   
   
   
   
   
   
   


10. 
    The maximum water pollution is caused by _______.
    
    
    
    
    1.  Industrial wastes
    
    
    2.  Ammonia
    
    
    3.  Detergents
    
    
    4.  Pesticides
    
    
    
    
    
    
    
    
    









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