Download LSE-13 (2008)

ASSIGNMENT BOOKLET
Bachelor’s Degree Programme in Science
(B.Sc.)
PLANT DIVERSITY - II
SCHOOL OF SCIENCES
Indira Gandhi National Open University
Maidan Garhi
New Delhi – 110 068
2008
LSE-13
LSE-13
(2008)
Dear Student,
As explained in the Programme Guide, you will have to do this assignment for the Plant Diversity
Course. It is a Tutor Marked Assignment (TMA).
The instructions for doing the assignments are provided in the Programme Guide under Section 7.1
Assignment. You should read the instructions carefully before you start doing this assignment.
Please submit your assignment within 14 weeks of the receipt of this assignment booklet, to the
Coordinator of your Study Centre.
We strongly suggest that you retain a copy of your assignment-response.
Wishing you all good luck.
2
ASSIGNMENT 2008
(Tutor Marked Assignment)
Course Code: LSE-13
Assignment Code: LSE-13/TMA/2008
Max. Marks: 100
1.
Match the items in Column A with those of Column B.
Column A
2.
Coralloid roots
Winged seeds
Longitudinally ridged stem
A prominent feeder in embryo
Wedge-shaped leaves
a)
Make labelled diagrams of the following:
b)
a)
(2½)
Rice
Soybean
Cashew nut
Olive
Cassava
(15)
Cremocarp
Diadelphous stamens
Gynobasic style
Protogynous flowers
Jaculator
(15)
Female inflorescence of Zea mays in longitudinal section.
Flower of Syzygium aromaticum in longitudinal section.
Ovary of Cucumis sativus in transverse section.
Floral diagram of Achras sapota.
Define the following terms and name the families in which these structures are found.
i)
ii)
iii)
iv)
v)
(2½)
Chlorenchyma
Aerenchyma
Sieve element
Phloem tissue
Lithocyst
Depict the following through clear and labelled diagrams.
i)
ii)
iii)
iv)
4.
Ephedra
Gnetum
Cycas
Ginkgo biloba
Pinus
Briefly explain the following terms and name the family where these structures are
found:
i)
ii)
iii)
iv)
v)
b)
a)
b)
c)
d)
e)
Give the botanical names of the following:
i)
ii)
iii)
iv)
v)
3.
Column B
i)
ii)
iii)
iv)
v)
i)
ii)
iii)
iv)
v)
(15)
Monadelphous stamens
Replum
Tendril
Verticillaster inflorescence
Phylloclade
3
(15)
5.
Describe the unique features of the following plants:
i)
ii)
iii)
iv)
v)
vi)
vii)
viii)
ix)
x)
(110)
Cuscuta sp.
Victoria amazonica
Sundew plant
Traveller’s tree
Double coconut
Stinging nettle
Window leaves
Largest leaf in the plant kingdom
Smallest flowering plant
Baobab
6.
Describe the life cycle of Pinus with proper diagrams.
(5)
7.
Write a detailed account on the uses of gymnosperms in  500 words.
(5)
8.
Describe the organogenesis of floral organs of angiosperms.
(5)
9.
Diagrammatically depict the following.
i)
ii)
iii)
iv)
v)
10.
(1×5)
Tillering habit in cereals
C.S. of root of sweet potato
L.S. of mature fruit of mustard
Fruit of Corchorus capsularis and C. olitorius
Cross section of fruit of cocoa
Differentiate between the following:
(1×5)
i)
ii)
iii)
iv)
v)
Nicotiana tabacum and N. rustica
Bast fibres and surface fibres
Vegetable and essential oils
Non-drying and semi-drying oil
Black tea and Green tea
11.
i)
ii)
iii)
Write the botanical names of any five sugar yielding plants.
Describe the propagation of sugarcane plant.
Describe the manufacture of sugar from its source plant.
12.
Give the botanical names of any four medicinal plants and describe the chemical composition
and uses of any two of them.
(1+2+2)
13.
Compare the families Malvaceae and Brassicaceae with respect to the following features:
Leaf, inflorescence, flowers, androecium and gynoecium.
(52)
Compare the families Arecaceae and Poaceae with respect to the following features:
Leaf, inflorescence, flower, androecium and gynoecium.
(52)
Discuss why angiosperms are far more successful than any other plant group in the plant
kingdom.
(10)
14.
15.
4
(1)
(1)
(3)