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Basic Botany I Question Paper

Basic Botany I

Course:Bachelor Of Science

Institution: Moi University question papers

Exam Year:

BACHELOR OF SCIENCE (BOTANY)
BASIC BOTANY I

Section A (Answer all questions) : 28 marks

1. Name the three main type of life cycles in algae

2. (a) Draw a well labelled diagram of spirogyra
' (b) Give the two pigments responsible for the red colour of Rhodophyceae.

3. (a) Give the names of spores formed after mitosis and meiosis in fungi.
(b) Give two examples in each of the above cases.

4. (a) Draw a well labelled diagram of pennicillium.
(b) Name the class of fungi where the above belongs

5. List the three types of sexual reproduction in bacteria.

6. (a) What is bacteriophage?
(b) List the three types of Thallus in lichens

7. (a) What is the purpose of maceration when preparing a specimen for staining and mounting?
(b) Differentiate between basic and acidic stains

8. Differentiate between simple tissues and complex tissues.

9. (a) Give a generalized balanced equation of photosynthesis
(b) Name two leucoplasts found in plant cells.

10. Give one structural difference in the appearance of aplant nucleus during interphase and late prophase

11. Define
(a) Mitosis
(b) Cytokinesis
(c) What is the main difference in cytokinesis between a cell with a cell wall and one without cell wall?

12. Give one major difference between a young plant cell and an older one

13. Give one major difference between:
(a) Function of xylem and phloem
(b) Cell division in eukaryotes and prokaryotes
(c) Name three tissues commonly found in plants

14. Describe four negative laboratory practices that should be avoided when working in a laboratory.

15. (i) Use a well labelled diagram to show three major components of an electron gun.
(ii) Name the most preferred metal used as an electron gun filament.

SECTION B (Answer any three questions)

16. (a)(i) What is the purpose of clearing when preparing a specimen for microscopical examination.
(ii) Give two solvents used for this purpose

(b) Briefly discuss the three types of sexual reproduction in algae.

17. (a) What is a culture medium
(b) Using appropriate diagrams, discuss the body structure in fungi

18. (a) List the four main body parts of bacteria
(b) Give fundamental differences between a prokaryotic and an eukaryotic cell
(c) Briefly describe the basic structural components of a plant cell wall.
Name the three layers of the cell wall.
(d) What is the function of a cell wall?

19. Briefly describe the structure and function of each of the following cell organelles
(a) Chloroplast
(b) Mitochondrion
(c) Nucleus
(d) Endoplasmic reticulum

20. (i) Briefly describe three types of objective lenses found in a bright field compound microscope.
(ii) Explain, using illustrations the following phase contrast microscope light rays and their images.
(a) In-phase light rays
(b) Revers-phase light rays

Basic Botany I Question Paper

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