C. S. (MAIN) EXAM, 2009

AGRICULTURE

Paper II

Time Allowed: Three Hours 1 1 Maximum Marks JOO!

INSTRUCTIONS

Each q11estio11 is prinred boTH in hindi and
in English.

Answer must be written in the medium
specified i11 the Admission Certificart issued
to you, which must be stared clearly all the
cover cf tlte answer-book i11 tire space
provided for the purpose. No marks will be
given for tlte answers written in a medium
other than that specified in tlte Admission
Certificate.

Candidnte.r should attempt Question Nos. 1
a1nd 5 which are compulsory.. OJld a,1y three
of the remaining questions selecting ar leasr
one question from each Section.

All questions carry equal marks.

Section

1. Answer any rliree of the following
words each:in about 200 3x20=60

Define micromutations. Briefly d;scuss the
methods for their detection and applications in
crop improvement.

Differentiate mass selection from pure-line
selection and also explain why pure-line
selection has been widely than mass
selection.

Classify different types of seed. How will you
proceed for producing the certified seed of
paddy?

How does Agrobacrerium and its plasmids
play role in transformation of dicotyledonous
plants Whether can they be utilized in
the transformation of any monocotyledonous
plants

2. Answer the following in about 200 words each 3x20=60

Descnl>e the medicinal importance of Indian
aloe (Aloe vera) along with its production
technology.

Discuss the importani;:e of allopolyploids in
evolution and crop improvements. Give
suitable examples.

Write the typical symptoms caused by 'litchi
mite' in 'litchi'. Suggest its management
practices.

3. Answer the following in about 200 words each 3x20=<i0

Di.scuss the use of multiline or composite
varieties to control epidemic diseases of self
pollinated crops.

Descnoe the etiology, diagnostic symptoms,
predisposing factors and management practices
of blister blight of tea.

Write about the problems and prospects of
commercial floriculture,in India.

4. Answer the following in about 200 words each

Differentiate Public Distribution System
fro1n Targeted Public Distribution System
(TPDS). How does TPDS help the population
living below poverty line 7

Delineate the carbohydrate metabolism in crop
plants.

Define epidemiology. Describe the forecasting
models used for pests and diseases of major
food crops in India.

Section

5. Answer any three of the following in about 200
words each 3x20=60

Explain the techniques used in production of
distant ybrids. What are the problems in using improved varieties in distant hybridization 7

Define dichogamy. Describe in brief protogyny
and protoandry.

Describe the virus-vector relationship of leaf
curl of tomato.

Specify the prevention and control strategies of
sLorcd grain pests.

6. Answer Lhe following in t1bout 200 words each :3x20-60

Explain Lile concepl of total post-harvest losses
in numgo. What methods can be used for
enhancing shelf-life of the mango

Recommend a viable package of practices for
commercial production of marij!old.

How do the root-knot nematode damage the
crop plants Suggest some measures 10
overcome the root-knol pruble,n.

7. Different1n1c the following in about 200 words
each 3x20=60

Somatic hybridization versus protoplast fusion
Cultural versus biological control of pests
Fonnal versus infonnal seed supply systems

8. Write short notes on the following in about 150
words each 4x I 5=60

Molecular basis Qf disease diagnosis
Antifeedant
Precision farming
Uz 99 and wheat cultivation

Note English version of the lnstr11crions is printed on
the front cover of this q11estion paper.