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National Open University Exam Past Question – CSP401 JUNE/JULY EXAMINATION

NATIONAL OPEN UNIVERSITY OF NIGERIA CSP401 BIOTECHNOLOGY IN CROP/PEST MANAGEMENT

14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS

SCHOOL OF SCIENCE AND TECHNOLOGY JUNE/JULY EXAMINATION

 

COURSE CODE:   CSP401

COURSE TITLE:   BIOTECHNOLOGY IN CROP/PEST MANAGEMENT TIME ALLOWED: 2 HOURS

INSTRUCTION:    ANSWER QUESTION 1 AND ANY OTHER FOUR QUESTIONS

 

  1. I need to rapidly multiply an exotic banana cultivar for planting and ensure that the resulting plant is identical to the stock plant material. Discuss the general steps/stages that I should follow. 20 marks

 

2 (a). What is biotechnology?                                                                                        5marks

 

(b). Define the following terms:

  1. i) A Construct 5 marks ii) Cloning                                                                                                         5 marks iii) Restriction enzymes                                                                                     5 marks iv) Transformation                                                                                             5 marks v) Totipotency                                                                                                    5 marks

 

3 (a). Discuss the causes of mutation in two categories.                                              17 marks

(b). What is recombinant DNA?                                                                                3 marks

 

4 (a). What are transgenic plants?                                                                                3 marks (b). Why are transgenic crops needed?                                                                     8 marks (c). Discuss the three major genetic traits that are used in breeding for resistance to fungal diseases in crops?                                                                                                         9 marks

 

  1. Discuss the GM control of insect pests. 20 marks

 

6 (a). List six ways through which herbicide resistance can be prevented or delayed.

0.5 x 6 points = 3 marks

(b). Discuss five advantages of herbicide resistant cultivars.  12 marks

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(c). What is nitrogen fixation and why is the process essential for life?                3 marks

(d). What is denitrification?                                                                                    2 marks

 

7 (a). Discuss the following genetic marker technologies:

(i). Restriction fragment length polymorphism;                                                    5 marks (ii). Amplified fragment length polymorphism and                                              5 marks (iii). Random Amplification of Polymorphic DNA.                                             3 marks

 

(b). What are the applications and limitations of the above technologies?           7 marks

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