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Sbt2110:Botany Question Paper

Sbt2110:Botany

Course:Bachelor Of Science In Food Science And Nutrition

Institution: Meru University Of Science And Technology question papers

Exam Year:2011

QUESTION ONE – (30 MARKS)
(a) Name the recognized kingdoms for the classification of living things today. (2½ Marks) (b) Fossil and biochemical evidence suggests that plants descended from multicellular green algae. What evidence has been adduced to support this? (4 Marks) (c) (i) Alternation of generations is a phenomenon characteristic of plants. Explain what it entails (2 Marks) (ii) Describe any four other characteristics unique to plants. (4 Marks) (d) Classify the following taxa accordingly (e.g. Chlorophyta – Division – Algae) (i) Geraniales (ii) Ascomycetes (iii)Cyanophyta (iv) Magnoliopsida (v) Mycota (5 Marks) (e) Explain how botanical knowledge can contribute to: (i) Resolving famine (ii) Dealing with glut (iii)Good agricultural practices (2½ Marks) (f) Plants have had an influence on human history and civilization since time immemorial. Elaborate on this statement. (6 Marks) (g) Explain the meaning of the following terms as used in nomenclature. (4 Marks) (i) Combining authority
2
(ii) Principle of priority
QUESTION TWO – (20 MARKS)
Discuss in details the structural and physiological adaptations of plants for the colonization of land. (20 Marks)
QUESTION THREE – (20 MARKS)
(a) Explain giving examples the following fungal terminology (4 Marks) (i) Parasitic (ii) Saprophytic (b) Summarize with the aid of a sigmoid curve the growth phases exhibited by annual plants and their individual parts. (10 Marks) (c) What is the relationship between vegetative and reproductive growth? (4 Marks) (d) Classify plant movements citing appropriate examples. (2 Marks)
QUESTION FOUR – (20 MARKS)
(a) What are the following offshoots of genetics concerned about? (6 Marks) (i) Cytogenetics (ii) Biochemical genetics (iii)Population genetics (b) Describe the three laws of Mendelian genetics (10 Marks) (c) Enumerate the genetic consequences of cross-pollination. (4 Marks)

Sbt2110:Botany Question Paper

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