NATIONAL OPEN UNIVERSITY OF NIGERIA
14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS
SCHOOL OF SCIENCE AND TECHNOLOGY
MARCH/APRIL 2014 EXAMINATION
COURSE CODE: CSP 401
COURSE TITLE: BIOTECHNOLOGY IN CROP/PEST MANAGEMENT
TIME ALLOWED: 2 ½ HOURS
INSTRUCTION: ANSWER QUESTION 1 AND ANY OTHER FOUR QUESTIONS
1. (a). What is biotechnology?
(b). Define the following terms:
i) A Construct
iii) Restriction enzymes
iv) Transformation and
v) Recombinant DNA.
2. Write briefly on the following:
(a). Nitrogen fixation
(b). Herbicide resistance and
(c). Random Amplification of Polymorphic DNA.
(d). List three methods by which a plant can convey herbicide resistance.
3. (a). Write briefly on the following:
(i) Sterile insect release method (SIRM).
(ii) Role of nitrogen in the biosphere.
(iii) Genetically modifying insect pests of crops as a control tactic
(b). What is recombinant DNA?
(c). List three herbicides and three herbicide-tolerant plants that have been developed for each of the three herbicides.
4 (a).Why are transgenic crops needed?
(b). What are diazotrophs?
(c). What is a genetic marker?
(d). List three commonly used genetic markers.
(e). Give five precautions that should be taken in order to get good response to biofertilizer application.
5 (a). Discuss the three major genetic traits that are used in breeding for resistance to fungal diseases in crops.
(b). Bt Toxin is a toxin encoded by the bacterium named Bacillus thuringiensis. Explain briefly the principle behind its mode of action and the target insects.
6. Discuss briefly the basic strategy for transforming a plant starting from assemblage of the construct.
7. (a). How does non-lethal mutation differ from neutral mutation?
(b).Discuss briefly the stages of micropropagation.
For the 2015 – till date past questions for this course CLICK HERE
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