NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF AGRICULTURAL SCIENCE
JANUARY/FEBRUARY 2013 EXAMINATION

COURSE CODE:                                                                              CSP 401                                                                              

COURSE TITLE:                                                                             Biotechnology in Crop and Pest Management

DURATION:                                                                                     2½ Hours

INSTRUCTIONS:                                                                            Answer any five questions

 

 Q1a.   What is biotechnology?                                                                                                                        3 marks

       b. Discuss conventional and modern biotechnology                                                                8 marks

       c.   Of what significance is biotechnology in developing countries?                                         9 marks

 

Q2.       Distinguish between the following pairs of terms:

(i)        Totipotency and genetic engineering                                                                         4 marks

(ii)       Construct and Plasmid                                                                                                             4 marks

(iii)      Transformation and cloning                                                                                                    4 marks

(iv)      Biolistics and restriction endonucleases                                                                    4 marks

(v)       Transgenic line and Transgenic event                                                                                   4 marks

 

Q3a.     Distinguish between mutation and micro-propagation.                                                       5 marks

     b.    Discuss the establishment/initiation and transfer to soil/acclimatization stages of micropropagation.    5 marks

     c.     Give five advantages and disadvantages each of micro-propagation.                                5 marks

     d.    Distinguish between spontaneous and induced mutation.                                                  5 marks

 

Q4a.     Discuss concerns over the development of herbicide tolerant crops                              10 marks

     b.    How has biotechnology been employed in the control of insect pests on crops?          10 marks

 

Q5a.     How is nitrogen fixed by cyanobacteria?                                                                                           6 marks

     b.    What are biofertilizers and what precautions should be taken in their use?                    6 marks

     c.     How do biofertilizers differ from chemical fertilizers?                                                        8 marks

 

Q6a.     What is a genetic marker?                                                                                                                   3 marks

     b.    List 5 commonly used genetic markers.                                                                                            5 marks

     c.     Discuss any 3 of the above listed markers.                                                                                      12 marks

 

Q7.      Discuss biotic and abiotic constraints to crop production that have encouraged the application of biotechnology.   20 marks


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