CONTINOUS ASSESMENT TES ONE
MODULE CODE: PST 05210
MODULE NAME: BASIC PHARMACOGNOSY
JUNE 2021
TIME: 2:00 HOURS DATE: ……………………….
GENERAL INSTRUCTIONS:
1. Read all instructions carefully.
2. Write your examination number on every page of question paper and answer sheets.
3. Cellular phones are not allowed in the examination room.
4. Each essay question should be answered on not more than three (3) hand written pages.
5. No additional answer sheet will be provided.
6. Failure to follow instructions will lead to the loss of marks.
FOR OFFICIAL USE ONLY
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SECTION |
TYPES OF QUESTIONS |
ALLOCATED MARKS |
SCORED MARKS |
INITIALS OF MARKER |
INITIALS OF VERIFIER |
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A |
MULTIPLE CHOICE |
10 |
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B |
MULTIPLE TRUE/FALSE |
10 |
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C |
MATCHING ITEMS |
10 |
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D |
SHORT ANSWER |
40 |
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E |
ESSAY |
30 |
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TOTAL |
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100 |
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SECTION A: MULTIPLE CHOICE QUESTIONS (10 MARKS)
Instructions:
· This section consists of ten (10) questions
· Choose the LETTER of the most correct answer and write it in the box provided using CAPITAL letter
· One mark will be awarded for each correct answer
· Response with SMALL letter will NOT be awarded any mark
1. Answer item (i) – (x) by choosing the letter of the most correct answer and write in the box provided using CAPITAL letter:
i. Which of the following medicinal plant its generic name may indicate certain characters of the plant ?
A. Cinchona Ledgeriana
B. Artemisia cina Berg
C. Myristica fragrans
D. Glycyrrhiza
E. Atropa belladonna
ii. Candle wax coloured yellow and being offered as Beeswax is an example of which method and effects of adulteration?
A. Admixture
B. Substitution
C. Sophistication with inferior varieties
D. Addition of worthless heavy materials
E. Deterioration
iii. Dry fruits which splits along inner suture only is…...
A. Cassia angustifolia
B. Seed coat as in maize
C. Strophanthus
D. Cashew nut
E. Rice
iv. Leaves with sharp stiff point is called…………………
A. Dentate
B. Serrate
C. Spiny
D. Crenate
E. Repand
v. Root hairs is found in which zones of the root?
A. Zone of differentiation
B. Zone of elongation
C. Zone of maturation
D. Zone of thickness
E. Zone of division
vi. A flower pollinated by birds have the following features…
A. May have pollens which floats on water
B. Have white flowers with strong fruity smell and open at night
C. Are log tube shaped, have bright red or yellow colours, and with no fragrance
D. Have bright colours, sweet fragrance and produce nectar
E. have large stigmas, no or little fragrance, and non- sticky pollens
vii. Which of the following plant shows mutual dependant organisms (beneficial) symbiosis?
A. Digitalis
B. Ocimum basilicum
C. Belladonna and mustard
D. Urtica dioica
E. Nicotiana
viii. A structure that arises from the testa near the hilum is called ……..
A. Elaiosome
B. Caruncle
C. Embryo
D. Tegmen
E. Micropyle
ix. A structure of young bark which may be composed of parenchyma or fibres, groups of fibres often occur opposite each group of phloem is ………..
A. Endodermis
B. Primary cortex
C. Epidermis
D. Phloem
E. Pericycle
x. Which of the following statement(s) regarding Cambium is correct...
A. It is composed of parenchyma cells with intercellular spaces
B. It consists of pericycle, vascular bundles and pith
C. The innermost layer of the cortex is the endodermis
D. lies below the epidermis
E. Consists of brick shaped and thin walled meristematic cells
SECTION B: MULTIPLE TRUE/FALSE QUESTIONS (10 MARKS)
INSTRUCTIONS:
· This section consists of Four (4) questions with five (5) options each
· Write the word “TRUE” and NOT letter ‘T’ for a correct statement and the word “FALSE” NOT letter ‘F’ for incorrect statement in the space provided before each option
· All responses should be in CAPITAL letters
· Half (½) a mark will be awarded for each correct response
· Responses with letters “T” and “F” will not be awarded any mark
· There will be a penalty of half (½) of allocated marks for responses with small letters.
2. Characteristics features of Ground or Fundamental Tissue System
A. …………… In monocot stem, ground tissue system is a continuous mass of sclerenchymatous tissue in which vascular bundles are found scattered
B. …………… These cells are arranged in a single layer with intercellular spaces
C. …………… Form the main body of the plants (bulk of plant)
D. …………… Includes all the tissues except epidermis and vascular bundles
E. …………… In the leaves, ground tissue is made of chlorenchyma tissues forming the mesophyll
3. Sieve elements……….
A. …………… Their end walls are transverse or oblique
B. …………… Have cytoplasm and a prominent nucleus
C. …………… are imperforate cells with bordered pits on end walls arranged one above the other
D. …………… Arranged parallel to the long axis of the plant body
E. …………… In matured sieve tube, nucleus is absent
4. Regarding characteristics of Meristematic Tissues
A. …………… Is the precursor of all the other tissues
B. …………… Form the ground tissue in a plant
C. …………… Have dense cytoplasm with large nuclei
D…………… Their cell walls are thin, elastic and made up of cellulose
E. …………… Have smaller vacuoles, scattered throughout the cytoplasm
5. Which of the following statements is/are correct concerning of Dicot stem Cortex
A. …………… It lies above the epidermis
B…………… the third zone made of barrel shaped cells arranged compactly without intercellular spaces
C. …………… The second zone rich in starch
D…………… First zone consists of a single layer of parenchymatous rectangular cells
E…………… Some resin ducts occur in second zone
SECTION C: MATCHING ITEMS QUESTIONS (10MARKS)
INSTRUCTIONS:
· This section consists of two (2) questions matching with five (5) options each.
· USE CAPITAL LETTERS
· Each correct response is awarded one (1) mark.
· Each item from column B is used only once
6. PART ONE: Match descriptions in column B with responses in column A by writing the letter of the correct response in the space provided on each option.
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COLUM A |
ANSWERS |
COLUM B |
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1. Hypanthium |
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A. If sepals are separate B. If stamens are fused C. If stamens are separate D. If receptacle elongated below the calyx E. If petals are fused F. If receptacle below the ovary G. If sepals are fused |
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2. Gynophore |
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3. Polysepalous |
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4. Gamosepalous |
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5. Diadelphous |
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PART TWO: Match the item in column B with examples in column A by writing the letter of the correct answer in the space provided
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COLUM A |
ANSWERS |
COLUM B |
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1. stalk |
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A. Fibrovascular tissue formed by adhesion of funicle and testa B. Scar left by the funiculus (attachment to the embryo) C. A structure that attaches the seed to the placenta D. Fleshy structures rich in lipids and proteins attached to the seed E. The inner seed coat F. An opening that marks position of the radicle G. A structure that arises from the testa near the hilum |
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2. Micropyle |
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3. Hilum |
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4. Raphe |
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5 . Elaiosome |
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SECTION D: SHORT ANSWER QUESTIONS (40 MARKS)
INSTRUCTIONS:
· This section consists of eight (8) questions.
· Write your answers in the space provided on each question
· Write a readable handwrite; DIRTY WORK IS NOT ALLOWED.
7. Mention six concentric rings of dicot stem (6 marks)
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
8. Outline six (6) Factors to consider when making a choice of a drying technique(6marks)
……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
9. Mention four ways in which adulteration can occur (4marks)
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
10. With a good definition of Endosperm, List two types of Endosperm (3marks)
……………………………………………………………………………………………… ................................................................................................................................................
………………………………………………………………………………………………
11. Mention four types of simple dry indehiscent fruits (4marks)
…………………………………………………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………………………………….
12. Outline six characteristics of Vessels or Tracheae ( 6 marks)
………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………………………………………
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13. Mention five differences between monocot and dicot root (5marks)
i. …………………………………………………………………………………………………………………………………………………………………………………………
ii. …………………………………………………………………………………………………………………………………………………………………………………………
iii. …………………………………………………………………………………………………………………………………………………………………………………………
iv. ……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………
v. …………………………………………………………………………………………………………………………………………………………………………………………
14. List six types of extractions methods (6 marks)
…………………………………………………………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………………………………………………………
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SECTION E: GUIDED ESSAY QUESTIONS (30 MARKS)
INSTRUCTIONS:
· This section consists of Two (2) questions which are supposed to be answered in a narrative way
· Write your answer on the empty pages of this question paper; each question should start on a new page.
· There will be a penalty of three (3) marks if questions are not answered in essay form
15. Explain five uses of Natural products 15 MARKS
16. Explain classification of the flower based on the following terms; 15 MARKS
Hermaphrodite Flower
Incomplete Flowers
Compound flowers
Perigynous flowers
Actinomorphic flowers
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Serial number |
Question number ……………………………………………… |
Do not write in this margin |
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