www.webserver.ignou.ac.in MSc Life Science Entrance Question Paper : Indira Gandhi National Open University

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Indira Gandhi National Open University
Entrance Test for M.Sc. Life Science Programme 2011
June, 2011
Total No. of Questions : 150 Time : 3 Hours

Model Question List : http://webserver.ignou.ac.in/prevyrp....htm#Entrance1
Model Question Paper : http://webserver.ignou.ac.in/prevyrp...20June2011.pdf

1. The most variable period of the cell cycle is :
(1) S-phase (2) G 1-phase (3) G 2-phase (4) G 0-phase

2. Which of the following does not constitute the cytoskeletal system ?
(1) Microtubules (2) Microbodies (3) Centrioles (4) Microfilaments

3. If a mother has blood group 'B' homozygous and father has 'A' unknown then the possible blood group of the progeny can be :
(1) AB and B (2) AB and A (3) A + B (4) 0

4. Estuaries are considered nutrient traps of :
(1) Rivers (2) Rivers and Oceans
(3) Lakes (4) Lakes and Oceans

5. Phytoplanktons are dominant in which of the following freshwater zones ?
(1) Limnetic zone (2) Profundal zone
(3) Littoral zone (4) Aphotic zone

6. Complete photosynthetic apparatus of chloroplast necessary for photosynthesis is coded by :
(1) nuclear gene (2) chloroplast gene
(3) nuclear and chloroplast gene (4) chloroplast and mitochondrial gene

7. Out of the five major types of collagen molecules, which of the following is not found in the connective tissue of vertebrates ?
(1) Type - 1 (2) Type - 2 (3) Type - 3 (4) Type - 4

8. The process of meiotic cell division in a primary sex cell in a human male usually gives rise to :
(1) one diploid cell (2) four monoploid cells
(3) one monoploid cell (4) four diploid cells

9. During opening of stomata which ions are transported from neighbouring cells to guard cells :
(1) K + ion (2) Cl - ion
(3) Na + ion (4) Ca + + ions

10. Concentration of urine in mammals depends on :
(1) Glomerulus's
(2) Length of Henley's loop
(3) Osmotic pressure of blood
(4) Size of organism

11. If mutation changes codon in such a way that there is no effect on functioning and overall structure of protein. This type of mutation is termed as :
(1) Silent (2) Mis-sense (3) Transition (4) Frameshift

12. Age of the fossils with an organic content in them can be determined by the use of :
(1) Radioactive carbon (2) Serology
(3) Calorimetery (4) Chromatography

13.In meiosis crossing over occurs during :
(1) Prophase - I (2) Prophase - II
(3) Metaphase (4) Anaphase

14. If the Km of enzyme for substrate A is 1 x 10-6 and for substrate B is 4 x 10-8, it means :
(1) Enzyme has more affinity for substrate A than substrate B
(2) Enzyme has more affinity for substrate B than substrate A
(3) Enzyme has equal affinity for substrate A and substrate B
(4) Enzyme is non - specific


15. Resolving power of scanning electron microscope is :
(1) 0.001 nm (2) 0.01 nm
(3) 0.1 nm (4) 0.0001 nm