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Bota 241: Taxonomy Of Higher Plants Question Paper
Bota 241: Taxonomy Of Higher Plants
Course:Bachelor Of Education Science
Institution: Chuka University question papers
Exam Year:2013
CHUKA
UNIVERSITY
UNIVERSITY EXAMINATIONS
SECOND YEAR EXAMINATIONS FOR THE AWARD OF DEGREE IN BACHELOR OF EDUCATION (SCIENCE) BACHELOR OF SCIENCE (AGED), BACHELOR OF SCIENCE (GENERAL)
BOTA 241: TAXONOMY OF HIGHER PLANTS
STREAMS: BED (SCIE), BSC (AGED). BSC (GEN) Y2SI TIME: 2 HOURS
DAY/DATE: WEDNESDAY 17/4/2013 2.30 PM – 4.30PM
INSTRUCTIONS:
ANSWER ALL QUESTIONS IN SECTION A AND ANY TWO FROM SECTION B
SECTION A (30 MARKS)
1. (a) Use sketch diagrams to differentiate between the following character states.
[5 Marks]
(i) Petiolate and sessile leaf
(ii) Axile and parietal placentation
(iii) Crenate and serrate leaf margin
(iv) Rounded and acute leaf apex
(v) Raceme and umbel inflorescence.
(b) Briefly explain three sources of taxonomic characters. [3 Marks]
2. The following are names given to a plant by various taxonomists
Erythronium obstusatum. Goodel (1902).
Erythronium nutallianum, Regel (1871).
Erythronium grandiflorum, Pursh (1814).
Erythronium utahence. Rudb (1917)
(a) State the correct name for the plant and give reasons for your answer. [2 Marks]
(b) Explain the advantages of using scientific names instead of common names.
[4 Marks]
3. (a) Construct a floral diagram using the following information: bisexual flower,
actinomorphic, pentamarous, calyx connate, corolla polypetalous, epipelalous stamens, bicarpellary pistil with one superior ovary. [4 Marks]
(b) Represent the information in 3 (a) above using a floral formula. [2 Marks]
4. (a) Give the alternative name of Asteraceae? [1 Mark]
(b) How does the name you have given in (a) above relate to the features of this
family? [2 Marks]
(c) Name the parts that compose the flower head of Asteraceae. [1 Mark]
5. For each of the following crop plants, give the botanical name and the family to which each belongs. [6 Marks]
(a) Sugar cane
(b) Tobacco
(c) Water melon
(d) Common bean
(e) Tomato
(f) Sunflower
SECTION B (40 MARKS)
6. (a) Describe the unique features of each of the three families of Leguminates as
shown by the flower structures and other vegetative features. [15 Marks]
(b) Give the economic importance of Legumes. [5 Marks]
7. Discuss the techniques that a plant taxonomist applies when collecting, preserving and storing specimens for herbarium. [20 Marks]
8. Discuss the six nomenclature principles that govern the international code of botanical nomenclature. [20 Marks]
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