No. of Printed Pages : 8 LSE-13
BACHELOR OF SCIENCE (B.Sc.)
Term-End Examination
June, 2011
CD LIFE SCIENCE
LSE-13 : PLANT DIVERSITY — II
Time : 3 hours Maximum Marks : 75
Note : Question no.1 is compulsory. Attempt any six questions
from questions no. 2 to 10.
1. (a) Give botanical names of one plant each
that
(i) has largest leaf.
(ii) is a man made cereal.
(iii) is called stinging nettle.
(iv) yields cardamom.
(v) yields nutmeg.
(b) Explain the following in one or two 5
sentences :
(i) Essential oil
(ii) Rhizome
(iii) Paracytic stomata! complex
(iv) Parthenocarpy
(v) Fruit abscission
LSE-13 1 P.T.O.
(c) Mention the morphology of the plant part 5
from which the following products are
obtained :
(i) Oranxe (edible part)
(ii) jute fibre
(iii) Opium
(iv) Sweet potato
(v) (love
2. Draw labelled diagrams of the following 10
TS. Nlericarp of
T.S. storage root of Reta p/agario
Sclereids.
I „S. Wheat grain
L.S. Microsporoph of Ciitas
Describe with the help of diagrams, five 5
diagnostic floral features of Brdssicaceae/
Asteraceae.
(b) Discuss breading programmes in rice.
(e) Describe as to flowers practice
deception to achieve successful pollination.
Differentiate beb,Veen dicotyledonous stem
and monocotyledonous stern.
1 SE-13
5. (a) Describe the phloem tissue with the help of 5
labelled diagram.
(b) Write five diagnostic features of family 5
Liliaceas/Arecaceae.
6. Differentiate between : 10
(a) Female reproductive part of Pines and
Cycas.
(b) Long staple fibres a id short staple fibres.
(c) Monocot leaf and dicot leaf.
(d) Black tea and Green tea.
(e) Air curing and sun curing of tobacco.
7. (a) Describe the morphology of male strobilus
5
in Gnetion.
(b) Which gymnosperm is known as living
5
fossil, and why ?
8. (a) Expand the following
4
(i) CRRI (ii) ICAR
(iii) CIMMYT (iv) IRRI
(b) Describe the tapping and processing of 6
rubber.
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9. Write short notes on : 10
(a) Ergot
(h) Pneumatophores
(c) Verticillaster inflorescence
(d) Saprophytic plants
10. Write anv tour differences between gymnosperms 10
and angiosperms. Discuss the adaptations in
angiosperms that have led to their dominance.
LSE-13 4
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