NATIONAL OPEN UNIVERSITY OF NIGERIA
FACULTY OF AGRICULTURAL SCIENCES
Km 4 Kaduna-Zaria Expressway Rigachikun, Kaduna
DEPARTMENT OF CROP AND SOIL SCIENCES
2020_2 EXAMINATION
COURSE CODE: AGB 404
COURSE TITLE: BIO-RESOURCE MANAGEMENT
TOTAL CREDIT UNITS: 3 CU
INSTRUCTIONS: Answer five questions in all. Question one is compulsory (30 marks). The
rest carry 10 marks each.
1) (a) In a sentence what you understand by:
(i) Species diversity (5 marks)
(ii) Ecosystem diversity (5 marks)
(b)In what ways has dependence on improved varieties of crops affected genetic
erosion in Nigeria (10 marks)
(c) The use of biotechnology in forestry production has some enormous advantages,
mention all. (10 marks)
2) Explain the importance or uses of biodiversity in:
(a)Environmental maintenance (5 marks)
(b) Agriculture (5 marks)
3) In what ways do genetic erosion occur in plant species (10 marks)
4) Mention five indirect causes of genetic erosion in Nigeria. (10 marks)5) The genes from some potential plants may not be represented in the seeds due to some random
factors. Mention those random factors. (10 marks)
6) There are enormous benefits in germplasm conservation of our bio-resources but this has met
a number obstacles. Mention these obstacles that affect effective use of germplasm in Nigeria.
(10 marks)
7) What is the status of germplasm appropriation in Nigeria? (10 marks)
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