CSIR Paper 2 Life Science Questions (Part 9 of 10)

  1. The primary criteria for classifying insects is

    1. Legs

    2. Thorax

    3. Wing

    4. Appendages

  2. In Northern hemisphere there is slow turnover of nutrient in terrestrial ecosystem as compare to southern hemisphere. The probable reason is

    1. Plants are not good in uptake of nutrients in northern hemisphere

    2. Temperature is low which is not suitable for nutrient recycling

    3. High rainfall in southern hemisphere

    4. Soil is nutrient deficient in northern hemisphere.

  3. Which antibody is known to be responsible for allergic reaction

    1. IgG

    2. IgA

    3. IgM

    4. IgE

  4. In which technique O-Phenyl Diamine is used as chromogenic substrate

    1. RIA

    2. ELISA

    3. Southern blotting

    4. Western blotting

  5. Animal biologist generally uses Line-transect method for estimating density. It is based on assumption that

    1. Organism will not move from marked transect

    2. All organisms are in straight line

    3. That animals on the line are seen

    4. Organism lack any competition

  6. Anticodon sequence lies in

    1. DNA

    2. t-RNA

    3. r-RNA

    4. r-RNA

  7. f and? values for right handed a helix are expected to be

    1. f Negative? negative

    2. f Negative? positive

    3. f Positive? negative

    4. f positive? positive

  8. Which is correct sequence of evolution of human culture and civilization?

    1. Cave painting> Burial> agriculture> pottery

    2. Cave painting>> agriculture> burial> pottery

    3. Cave painting> Burial> Pottery> Agriculture

    4. Agriculture> burial> Pottery> Cave Painting

  9. Which molecule has property of self replication?

    1. Protein

    2. Carbohydrate

    3. Lipids

    4. Nucleic acid

  10. The model organism to study cell lineage is

    1. Xenopus

    2. Yeast

    3. Caenorhabdtis elegans

    4. Drosphilia