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: Biosystematics And Palynology Question Paper

: Biosystematics And Palynology

Course:Bachelor Of Science In Molecular Biology

Institution: Masinde Muliro University Of Science And Technology question papers

Exam Year:2010

MASINDE MULIRO UNIVERSITY OF SCIENCE AND TECHNOLOGY
(MMUST)
UNIVERSITY EXAMINATIONS 2009/2010 ACADEMIC YEAR
THIRD YEAR SECOND SEMESTER EXAMINATIONS
FOR THE DEGREE OF
BACHELOR OF SCIENCE IN BIOTECHNOLOGY, BIOLOGY AND EDUCATION SCIENCE
COURSE CODE: SBT 321
COURSE TITLE: BIOSYSTEMATICS AND PALYNOLOGY
DATE: 21st April 2010

INSTRUCTIONS
Answer ALL questions one in section A and any two questions in section B

SECTION A Answer ALL questions (40 marks)
1. Biosystematics and conventional taxonomy are two methodological variants of the same discipline. Explain this statement. (5 marks)

2. Distinguish between autoploid, amphiploid, aneuploid, polyploidy and haploid. (5 marks)

3. a) Explain apertures from a palynologists perspective. (2 marks)
b) Briefly describe how apertures are important in plant classification. (3 marks)

4. Explain the following concepts as explained in Biosystematics; (5 marks)

i. Geographic barrier
ii. Incomplete genetic barrier
iii. Absolute genetic barrier
iv. Hybridization
v. Apoximis

5. a) Briefly describe two weaknesses of convectional taxonomic approach. (2 marks)

b) Give three limitations in the cynogenetic approach of plant classification. (3 marks)

6. Give the meanings of the following terms; (5 marks)

i. Monosulcate pollens
ii. Tricolpate pollens
iii. Apospory apomicts
iv. Dispory apomicts

7. List five applications of Palynology in the world of science. (5 marks)

8. a) What is cynogenetics? (2 marks)

b) Briefly describe how cynogenetics is useful in Biosystematics classification approach. (3 marks)

SECTION B ANSWER ANY TWO QUESTIONS 30 MARKS
9. a) Suppose three plant populations, population A (found at the Kenyan coast), population B (found at the Tanzanian coast) and population C (found at the Mozambique coast), are disagreed upon by taxonomists, partly because of their polymorphic nature. As a Biosystematist you are required to help in setting the dispute. Give in a sequential pattern the steps/ activities that you will conduct in finding in a solution. (10 marks)

b) Indicate the provisional results in a) above that will suggest to you that the populations A, B and C belong to different Comparium. (5 marks)

10. Briefly describe the pollen fossil extraction process that preceeds pollen analysis and other taxonomical activities. (15 marks)

11. Describe the four most widely accepted unit categories of Biosystematics in order of ascending phyletic value and explain why they are only considered as “approximates” to respective categories in the convectional taxonomy. (15 marks)

SBT 321: BIOSYSTEMATICS AND PALYNOLOGY

: Biosystematics And Palynology Question Paper

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