BSc Botany Sem V 2016 17 2016-17 Botany Paper III Question Paper - Mumbai University | munotes

Questions asked in this paper

• 2) Figures to the right indicate full marks

1. Q4 Use of simple calculator is allowed
2. Q1 Answer any two of the following 15 marks
   • a) Describe the structure and functions of nucleolus
   • b) Give an account of the structure of vacuole in plant cells. Add a note on its
   • c) What are giant chromosomes? Describe in detaii the morphology of giant = d) Describe in detail, the process of formation of "initiation complex" of translation
3. Q2 Answer any two of the following 15 marks
   • a) Define Osmosis. Explain its role in absorption of water in plants
   • b) What are macronutrients? Describe the source, functions and deficiency symptoms of any two macronutrients studied by you
   • c) Describe the anatomy of sieve tube elements and companion cells
   • d) Describe various internal factors affecting plant growth
4. Q3 Answer any two of the following
   • a) Define bioremediation. Discuss the principle involved in bioremediation
   • b) What is bioaccumulation? Describe the process of bioaccumulation in an
   • c) Explain biomagnification. Discuss the role of aquatic ecosystem
   • d) Define phytoremediation. Explain various processes involved in phytoremediation of metals
5. Q4 Answer any two of the following 15 marks
   • a) Experimental study of the effect of exposure of fish to sublethal concentrations of dichlorvos for 12 hours showed the following results pertaining to 0, consumption (mg/g/h). Analyse with paired t-test, the
   • b) Two varieties of potato plants (variety A& B) yielded tubers as shown in the following table. Does the mean number of tubers of variety A significantly differ from that of variety B? Analyse by unpaired t- test
   • c) Three different concentrations of IBA were given to check number of roots emerged from detached leaves. Test with ANOVA whether the three concentrations have identical effect on root emergence Number of roots
   • d) Deduce the regression equation for the given data and calculate the value of y = 0.6 No. of roots emerged after 7 days (y)
6. Q5 Write short notes any three of the following : 15 marks
   • (a) Degeneracy of Genetic code
   • (c) Donnan equilibrium
   • (d) Microbial population in bioremedication
   • (f) Applications of t - test

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