C S MAIN 2014 AGRICULTURE (Paper II)


Answer the following in about 150 words each: lOx5=50

"Aneuploids are generally weak, but they are useful in plant breeding": Evaluate this statement in the light of available information.

Explain the meaning of genetic puritY of seed. Briefly describe the various approaches for testing
genetic purity of seed.

"Heterosis observed in both self and cross-pollinated crops, but hybrid varieties are more common
in cross-pollinated crops". Coinment on this statement on the basis of relevant information.

1.(d)Briefly describe the procedure for of induced mutation in plant' breeding.

Highlight the various contributions of inter-specific hybridization in crop improvement.

Discuss the role of National Seeds Corporation in quality production in India. 12t
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2.(b)Define pureline. Discuss the of pureline selection in" self- and cross-pollinated crops.

2.(c)Explain the use of cytoplasmic-genetid male sterility in hybrid seed production.

2.(d)Why do traits show continuous variation

Discuss the relevance of mode of reproduction in plant breeding.

DNA is the genetic material. How does DNA contribute to the development of various traits?

Define general combining abilitY. Describe the procedure for recurrent selection for general combining
ability.

3.(d)'What is plant disease epidemic? Why do disease epidemics occur? How can they be managed

4. Write notes on the following

TRIPS Agreement
Somaclonal variation
Gene cloning and development of transgenics
Gene Banks


SECTION
5. Answer the following in about 150 words each: IOx5=50

What are the fundamental difference between transpiration and guttation In a winter morning, water
droplets might noticed on some. plant leaves. How could it be ascertained whether the water droplets were those of qew drops or guttation water? .

What is meant by 'sigmoid' growth curve? Draw and describe a sigmoid growth cUrve citing its different phases:

Show full reactions where Alcohol'dehydrogenase, Nitrate reductase, GlucokinaSe and
Succinate dehydrogenase ·are involved, therewith mentioning respective co-factor, co-enzyme, prosthetic group etc., if so required.

Differentiate between incipient wilting, temporary wilting and permanent wilting. Classify different
types of droughts and mention how are they related to each other.

Write short note on Hill reaction. Prove that 02 evolved during photosynthesis comes from water and not from CO2,

Defme vernalization. How vernalization is activated in plants? Briefly discuss its importance in agriculture.

Name the causal agent of black Siga'toka disease of banana. Enumerate the diagnostic symptoms of the disease. Suggest remedial measures to control the disease."

Give an account of different types of water present in soil.

Enumerate objectives of Integrated Child Developmentu Service Scheme.

Explain in brief Targeted Public Distribution System (TPDS).

What measures have been taken to increase transparency in the functioning of TPDS.

Describe India's food security system. Enwnerate reasons for disturbance in food demand and supply.

7.(c)What are the key determinants of malnutrition? what major initiatives have been taken to improve nutritional status of Indian population?

Briefly discuss handling methods for export of mango.

Describe the principles and practices of plant quarantine. Can import quarantine be exempted. by submitting a phytosanitary certificate issued by the government of the exporting country? Also, are dismfestations of planting material in the exporting country prior to importation or disinfestations in transit performed on the high seas considered to fulfil the requirements for quarantine inspection

What is a pesticide formulation? Differentiate active ingredient from inert ingredient. Give at least two
examples each oT active and inertingredients.

Define jelly. Explain the principle of jelly formation. Briefly describe the preparation of jelly and
enumerate problems in jelly making.

What is meant by protective cultivation? Briefly discuss importance of greenhouse in protective cultivation.