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All posts from Civil Services Main Examination Model Question Paper 2016 : Union Public Service Commission

Organisation : Union Public Service Commission
Document Type : Question Paper
Year : 2016
Exam : Civil Services (Main) Examination – 2016

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Agriculture Paper – I :
Animal Hus & Vet. Sc. Paper – I
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Civil Services Examination Model Question Paper :

Paper : Botany
Time Allowed : Three Hours
Maximum marks : 250

Related : Union Public Service Commission Assistant Architect Question Paper :

Question Paper Specific Instructions :
** There are EIGHT questions divided in TWO SECTIONS and printed both in HINDI and in ENGLISH.
** Candidate has to attempt FIVE questions in all.

** 60uestions no. I and 5 are compulsory and out of the remaining, any THREE are to be attempted choosing at least ONE from each section.
** The number of marks carried by a question/part is indicated against it.

** Answers must be written in the medium authorized in the Admission Certificate which must be stated clearly on the cover of this @uestion-cum-Ansu0er (69CA) Booklet in the space provided.
** No marks will be given for answers written in a medium other than the authorized one.
** Word limit in questions, wherever specified, should be adhered to.

** Diagrams/Figures, wherever required, may be drawn in the space provided for answering the question itself Attempts of questions shall be counted in sequential order. Unless struck off, attempt of a question shall be counted even if attempted partly.

Section A :
Explain the following : 10×5=50
Q1. (a) Polyteny differs from polyploidy 10
(b) Factors affecting recombination frequencies 10
(c) Chi-square test as a test of goodness offit 10
(d) Chemical mutagens 10

Q2. (a) Explain and describe the tools and techniques of FISH. 20
(b) Describe the basic structure of a nucleosome. 15
(c) “The consequences of translocations are profound. They lead not only to a change in gene linkage in the translocated sections but also to easily incurred meiotic abnormalities.” Discuss. 15
(d) Chi-square test as a test of goodness offit 10

Q3. (a) Citing suitable evidences, explain plastid inheritance in four o’clock plant. 15
(b) Discuss Inbreeding depression versus Heterosis. 15
(c) How does the Ins P8/DAG pathway participate in the process of translocation of cellular signals ? 20

Q4. Briefly describe the characteristics and applications of the following : 10×5=50
(a) Back cross method 10
(b) Restriction endonucleases 10
(c) Transgenic plants as living biUreucturs 10
(d) Molecular markers 10
(e) Retroviruses as vectors 10

Section B :
Q5. Explain the following : 10×5=50
(a) Apoenzyme 10
(b) Ethylene as a volatile hormone 10
(c) Soil salinity also restricts the growth of plants 10
(d) Taiga or Boreal forests – 10
(e) “The pyramid of energy always takes a true upright shape.” Why ? 10

Q6. (a) Describe the role of glyoxysomes in conversion of fats into more mobile molecules. 15
(b) Distinguish between phloem loading and phloem unloading. 15
(c) What is Niche overlap ? Narrate the biogeographic classifications of India. 5+15=20

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