 |
PTS710S - PLANT STUDIES 2 - 1st Opp - JUNE 2022 |
|
|
1 Page 1 |
▲back to top |
n Am I BI A u n IVER s ITY
OF SCIEnCE Ano TECHnOLOGY
FACULTYOF HEALTH,APPLIEDSCIENCESAND NATURALRESOURCES
DEPARTMENTOF AGRICULTUREAND NATURALRESOURCESCIENCES
QUALIFICATION: Bachelor of Natural Resource Management
QUALIFICATION CODE: 07BNRS
LEVEL: 7
COURSECODE: PTS710S
COURSENAME: Plant Studies 2
SESSION:June 2022
DURATION: 2 hours
PAPER:Theory
MARKS: 100
FIRSTOPPORTUNITYQUESTION PAPER
EXAMINER(S) Dr. J.M. Kamwi
MODERATOR: Dr. E. Kwembeya
INSTRUCTIONS
1.
2.
3.
4.
Answer ALL ten (10) questions.
Read all questions carefully before answering.
Number your answers clearly.
Make sure your student number appears on the answering script.
THIS MEMORANDUM PAPERCONSISTSOF 4 PAGES
(Including this front page)
|
|
2 Page 2 |
▲back to top |
1. One of the advances of Angiosperm over Gymnosperms is that they have advanced [5]
pollination syndromes. What does this mean and provide examples.
2. Name and explain any two challenges within the Indigenous natural plant products [6]
sector.
3. Many plants are armed with spines, prickles or thorns, especially in the more arid [12]
parts of Namibia. Discuss this statement, explaining the differences between these
three terms, and the diversity of these structures, and their functions. Give relevant
examples to clarify your answer. You may also use drawings, if you wish.
4. 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 ango!ensis
E. Euphorbiaceae
(6) Kige/ia africana
F. Poaceae
(7) Termina/ia sericea
G. Strychnaceae
(8) Searsia marlothii
H. Clusiaceae
(9) Baphia massaiensis
(10) Phragmites australis
I. Combretaceae
U. 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
5. The genus Commiphora is a truly arid-adapted and Namibian genus.
5.1 Discuss this statement by elaborating on the structure of the plantthat enables it [4]
to thrive in this country.
5.2 To which family does this genus belong?
[1]
5.3 Name two species of this genus that are endemic to the Namib.
[2]
6. In Moraceae, the compound fruit has become modified into a very unusual structure [12]
with a unique relationship between the fruit and its pollinators. Explain this
statement.
7. Goethe's "foliar theory of the carpel" is still the best hypothesis for explaining the [4]
evolution of the carpel, describe this theory in detail.
|
|
3 Page 3 |
▲back to top |
8. The family Fabaceae is one of the most important and diverse families in Namibia.
8.1 Discuss the importance of this family to the Namibian environment, and to [20]
people. (Refer to different biomes and vegetation types, adaptations of the family,
and mention species that are important and what they are important for.)
8.2 The family is regarded by some taxonomists as having three subfamilies. Describe [9]
the distinguishing characteristics of the three subfamilies.
9. (a) Sympetalous
(b) Synfilamentous
(c) Adnation (adnate)
(d) Megacarpa
(e) Microcarpa
(f) Perianth
(g) Androecium
(h) Gynoecium
(i) Diagnostic characters
(j) Type specimen
(k) Flora
10. Each diagnostic 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.
COLUMN A - CHARACTERISTICS
COLUMN B - GENERA
(1) Simple, opposite leaves; interpetiolar stipule; inferior A. Acanthosicyos
ovary.
(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 bi pinnate leaves with D. Euphorbia
small leaflets; lacks thorns, has bright yellow flowers in
spikes.
(5) A member of the daisy family that has silvery leaves E. Commiphora
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,
infloresence in axillary clusters and is abundant in the
Khomas region.
(8) Tree with diameter up to 10m; palmately compound H. Vangueria
leaves; large white flowers; a large ovoid fruit that is
high in vitamin C.
(9) Plants with large, boat-shaped, succulent leaves,/. Elephantorrhiza
sometimes with toothed margins.
(10) Plants with aromatic resiri, with many endemic}. Tarconanthus
species in the Namib, often pachycauls, often with
|
|
4 Page 4 |
▲back to top |
peeling bark.
L. Hyphaene
M. Aloe
N. Phoenix
o. Adansonia