Life Science Mock Test CSIR NET Exam - Part 10

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.  Rapid nutritional recycling takes place in _______.
    1.  Oceans
    2.  Deserts
    3.  Grasslands
    4.  Corals

  2.  In binomial distribution of a where n > 10 and p is ≈ 0.5 the standard deviation is determined by:
    1.  square root of p
    2.  square root of pn
    3.  square root of pq
    4.  square root of npq

  3. p-Aminobenzoate (pABA) is an important building block of:
    1.  Tetrahydrofolate
    2.  Biotin
    3.  Lipoate
    4.  S-Adenosylmethionine

  4. Minimata disease is due to pollution by ___________.
    1.  Entry of Cadmium into drinking water
    2.  Organic waste into drinking water
    3.  Industrial waste mercury into fishing water
    4.  Oil spills in oceans

  5. A non harmful species copies a harmful and tasteless form, the type of mimicry shown is  ________.
    1.  Darwinian 
    2.  Bateson 
    3.  Morganarian
    4.  Mullerian

  6. Which of the following is considered presence of carpels with style and stigma as characteristic feature of angiosperms?
    1.  J.D. Hooker
    2.  Carl Linnaeus
    3.  Armon Takhtajan
    4.  George Bentham

  7. The gradual mode of speciation in single lineage in which species diverge in spurts of relatively rapid change which result in increase in species is termed as __________.
    1.  Adaptive radiation
    2.  Anagenesis
    3.  Punctuated equilibrium 
    4.  Cladogenesis

  8. In fluorescence microscopy, the function of exciter filter is to remove all colours, but it allows only ____________to pass through.
    1.  Yellow colour
    2.  White colour
    3.  Green colour
    4.  Blue colour

  9.  The main difference between active transport and facilitated diffusion is _____.
    1.  although a carrier molecule may not be needed in active transport, diffusion cannot take place without a carrier molecule.
    2.  in diffusion the molecules move from areas f low concentration to areas of high concentration without spending energy
    3. in active transport energy is consumed to move molecules against a concentration gradient
    4.  in active transport the molecules move from areas of low concentration to areas of high concentration without spending energy

  10. Exotic weed which proved very harmful for forest and grassland is _________.
    1.  Verbenia
    2.  Eupatromia
    3.  Eichornia
    4.  Salvia