Life Science Mock Test CSIR NET Exam - Part 1

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. 
    The embryonic stage in frog in which differentiation of mesoderm takes place is called _________.
   
   
   
   
   1.  Neurula
   
   
   2.  Morula
   
   
   3.  Gastrula
   
   
   4.  Blastula
   
   
   
   
   
   
   
   
   


2. 
   Which of these is an explanation of why a population can fluctuate once it has reached carrying capacity?
   
   
   
   
   1.  A population of organisms always grows rapidly once it reaches carrying capacity
   
   
   2.  Limiting factors can influence the number of organisms in a population once it reaches carrying capacity
   
   
   3.   All populations experience exponential growth once they reach carrying capacity
   
   
   4.  the number of organisms decreases but never increases once it reaches carrying capacity
   
   
   
   
   
   
   
   
   


3. 
   Which fungus is known as 'Green Mold' ?
   
   
   
   
   1.  Penicillium
   
   
   2.  Mucus
   
   
   3.  Aspergillus
   
   
   4.  Saccharomyces
   
   
   
   
   
   
   
   
   


4. 
   __________ is a density-dependent factor.
   
   
   
   
   1.  Temperature
   
   
   2.  Drought
   
   
   3.  Competition 
   
   
   4.  Floods
   
   
   
   
   
   
   
   
   


5. 
   Fresh Yeast cells are good source of ______.
   
   
   
   
   1.  Morphine
   
   
   2.  Nicotine
   
   
   3.  Caffeine
   
   
   4.  Vitamin-B
   
   
   
   
   
   
   
   
   


6. 
   Based on the data in the graph, which of these statements is true?
   
   
   
   
   1.  At the beginning of the year, there are no houseflies in the population
   
   
   2.  The population size shows a straight-line increase
   
   
   3.  Growth of the housefly population begins to increase rapidly about 3/4 of the way through the first year
   
   
   4.  All of the population will be dead at the end of one year
   
   
   
   
   
   
   
   
   


7. 
   Fermentation takes place in which component of a cell ?
   
   
   
   
   1.  Cytoplasm
   
   
   2.  Nucleus
   
   
   3.  Mitochondria
   
   
   4.  None of the above
   
   
   
   
   
   
   
   
   


8. 
   Which tissue of plants conducts food to its body?
   
   
   
   
   1.  Selerides
   
   
   2.  Parenchyma
   
   
   3.  Xylem
   
   
   4.  Phloem
   
   
   
   
   
   
   
   
   


9. 
   Which of these is NOT a characteristic of a rapid life-history organism?
   
   
   
   
   1.  long life span
   
   
   2.  rapid period of time until maturation
   
   
   3.  early reproduction age
   
   
   4.  small body size
   
   
   
   
   
   
   
   
   


10. 
    Which pollutant may lead to 'Black foot disease' ?
    
    
    
    
    1.  Hg
    
    
    2.  Cu
    
    
    3.  Cd
    
    
    4.  As
    
    
    
    
    
    
    
    
    

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