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PTS710S - PLANT STUDIES 2 - 1ST OPP - JUNE 2023 |
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nAm I BI A u n IVE RS ITV
OF SCIEnCE Ano TECHnOLOGY
FACULTYOF HEALTH, NATURAL RESOURCESAND APPLIED SCIENCES
SCHOOLOF AGRICULTUREAND NATURAL RESOURCESCIENCES
DEPARTMENT OF NATURAL RESOURCESSCIENCES
QUALIFICATION: BACHELOROF NATURALRESOURCESMANAGEMENT
QUALIFICATION CODE: 07BNRS
COURSECODE: PTS7210S
LEVEL: 7
COURSENAME: PLANTSTUDIES2
DATE:JUNE 2023
DURATION: 3 HOURS
MARKS: 100
FIRST OPPORTUNITY EXAMINATION QUESTION PAPER
EXAMINER(S) Dr. J. M. Kamwi
MODERATOR: Prof. E.G. Kwembeya
INSTRUCTIONS
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLE MATERIALS
1. Examination question paper
2. Answering book
3. Calculator
THIS QUESTION PAPERCONSISTSOF 2 PAGES(Excluding this front page)
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1. Describe Psydrax livida in terms of its leaves, general growth form and habit.
[6]
2. Describe Terminalia prunioides in terms of its leaves, general growth form and
[6]
habit.
3. Angiosperms have sophisticated pollination syndromes, which is one advantage they [5]
have over gymnosperms. Give examples and explain what this means.
4. Identify and describe any two problems the industry for Indigenous natural plant [6]
products is facing.
5. Particularly in Namibia's more dry regions, many plants have thorns, spines, or [12]
prickles to defend themselves. Explain the distinctions between these three terms,
the variety of these structures, and their purposes as you respond to this statement.
To help make your response clear, use pertinent examples. If you wish, you can also
utilize drawings.
6. Each species in column A belongs to a family/subfamily in column B. Write down the [15]
number from column A and the corresponding letter from column B, e.g. (1) H. NOTE:
more than one species could belong to the same family.
COLUMN A - SPECIES
COLUMN B - FAMILIES
(1) Philenoptera violacea
A. Burseraceae
(2) Schinziophyton rautanenii
B. Bignoniaceae
(3) Ziziphus mucronata
C. Anacardiaceae
(4) Datura innoxia
D. Rhamnaceae
(5) Commiphora angolensis
E. Euphorbiaceae
(6) Kige/ia africana
F. Poaceae
(7) Terminalia sericea
G. Strychnaceae
(8) Searsia marlothii
H. Clusiaceae
(9) Baphia massaiensis
I. Combretaceae
(10) Phragmites australis
J. Sapotaceae
(11) Spirostachys africana
K. Ebenaceae
(12) Colophospermum mopane
L. Solanaceae
(13) Adansonia digitata
M. Fabaceae / Papilionoidae
(14) Grewia retinervis
N. Fabaceae / Caesalpinioidae
(15) Laggera decurrens
0. Fabaceae / Mimosoidae
P. Malvaceae (new classification)
Q. Moraceae
R. Asteraceae
7. The genus Commiphora is a truly arid-adapted and Namibian genus.
7.1 Discuss this statement by elaborating on the structure of the plant that enables it [4]
to thrive in this country.
7.2 To which family does this genus belong?
[1]
7.3 Name two species of this genus that are endemic to the Namib.
[2]
8. The complex fruit has evolved into a very uncommon structure in the Moraceae [10]
family and has a distinctive relationship with its pollinators. Describe this assertion.
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9. The best explanation for the evolution of the carpel is still Goethe's "foliar theory of [2]
the carpel"; describe this theory in more detail.
10. The family Fabaceae is one of the most important and diverse families in Namibia.
10.1 Discussthe importance of this family to the environment and people of Namibia. [15]
(use different biomes and vegetation types, family adaptations, identify important
species and their importance).
10.2 Some taxonomists believe that the family has three subfamilies. Describe the [6]
distinguishing features of the three subfamilies.
11. Eachdiagnostic characteristic(s) in column A belong(s) to a genus in column B. Write [10]
down the number from column A and the corresponding letter from column B,e.g (1)
B.
COLUMNA - CHARACTERISTICS
COLUMNB - GENERA
(1) Simple, opposite leaves; interpetiolar stipule;
inferior ovary.
A. Acanthosicyos
(2) Spiny, leafless shrub endemic to the Namib, with B. Ozoroa
large spiny fruit. The pulp and seeds are eaten.
(3) Fruit a 4-5 winged samara, bark peeling in long
C. Ficus
threads.
(4) Shrub or small tree with large bipinnate leaves D. Euphorbia
with small leaflets; lacks thorns, has bright yellow
flowers in spikes.
(5) A member of the daisy family that has silvery
E. Commiphora
leaves and is abundant in the Khomas region.
(6) Fruit is a syconium.
F. Combretum
(7) Deciduous or semi-deciduous tree with a rounded G. Berchemia
crown, leaves simple and alternate or spirary arranged,
inflorescence in axillary clusters and is abundant in the
Khomas region.
(8) Tree with diameter up to 10m; palmately
H. Vangueria
compound leaves; large white flowers; a large ovoid
fruit that is high in vitamin C.
(9) Plants with large, boat-shaped, succulent leaves, I. E/ephantorrhiza
sometimes with toothed margins.
(10) Plants with aromatic resin, with many endemic 11. Tarconanthus
species in the Namib, often pachycauls, often with
peeling bark.
L. Hyphaene
M. Aloe
N. Phoenix
0. Adansonia