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.

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.(15)

Column A Column B

i)Coralloid rootsa)Ephedra

ii)Winged seedsb)Gnetum

iii)Longitudinally ridged stemc)Cycas

iv)A prominent feeder in embryod)Ginkgo biloba

v)Wedge-shaped leavese)Pinus

2.a)Make labelled diagrams of the following:(2½)

i)Chlorenchyma

ii)Aerenchyma

iii)Sieve element

iv)Phloem tissue

v)Lithocyst

b)Give the botanical names of the following:(2½)

i)Rice

ii)Soybean

iii)Cashew nut

iv)Olive

v)Cassava

3. a)Briefly explain the following terms and name the family where these structures are

found:(15)

i) Cremocarp

ii) Diadelphous stamens

iii) Gynobasic style

iv) Protogynous flowers

v) Jaculator

b)Depict the following through clear and labelled diagrams.(15)

i) Female inflorescence of Zea mays in longitudinal section.

ii) Flower of Syzygium aromaticum in longitudinal section.

iii) Ovary of Cucumis sativus in transverse section.

iv) Floral diagram of Achras sapota.

4. Define the following terms and name the families in which thesestructures are found.(15)

i) Monadelphous stamens

ii)Replum

iii)Tendril

iv)Verticillasterinflorescence

v)Phylloclade

5. Describe the unique features of the following plants:(110)

i) Cuscuta sp.

ii) Victoria amazonica

iii) Sundew plant

iv) Traveller’s tree

v)Double coconut

vi) Stinging nettle

vii) Window leaves

viii) Largest leaf in the plant kingdom

ix) Smallest flowering plant

x)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.(1×5)

i)Tillering habit in cereals

ii)C.S. of root of sweet potato

iii)L.S. of mature fruit of mustard

iv)Fruit of Corchorus capsularis and C. olitorius

v)Cross section of fruit of cocoa

10.Differentiate between the following:(1×5)

i)Nicotiana tabacum and N. rustica

ii)Bast fibres and surface fibres

iii)Vegetable and essential oils

iv)Non-drying and semi-drying oil

v)Black tea and Green tea

11. i)Write the botanical names of any five sugar yielding plants. (1)

ii)Describe the propagation of sugarcane plant. (1)

iii)Describe the manufacture of sugar from its source plant. (3)

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)

14.Compare the families Arecaceae and Poaceae with respect to the following features:

Leaf, inflorescence, flower, androecium and gynoecium.(52)

15.Discuss why angiosperms are far more successful than any other plant group in the plant

kingdom.(10)

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