AGRICULTURE-2003, PAPER II
Time Allowed: Three Hours maximum Marks: 200

Candidates should attempt Questions 1 and 5 which are compulsory, and any THREE of the remaining questions selecting at least ONE question from each Section.

SECTION A
1. Write short notes on any four of the following in about 150 words each:

Sun drying and osmo-dehydration of fruits and vegetables.
Plasmolysis and osmosis in plants
Role of growth retardants in horticulture
Landscape gardening and garden architecture
Use of chemotheraputants for the control of plant diseases.

2. Answer the following in about 150 words each.
Discuss the novel application of horticultural products in:
Biodiversity
Botanical Gardens
Research, extension and education in relation to knowledge transfer
International trade and marketing

3. Answer the following in about 150 words each:
Define Chimera and its significance in horticulture.

How the mutants occur in nature? Discuss their significance in field crops.
What are the limitations for breasting of fruit crops? Name important commercial hybrids developed in sub-tropical fruits through breeding.
Describe the Mendel's laws of inheritance. Discuss the principles of dominance.

4. Answer the following in about 50 words each:
Define- the integrated Pest Management in agriculture. List four important pests each of sugarcane and cotton, their nature of damage and control.
Define arid-zone horticulture. Name fruits frown commercially under this condition, their scientific names and important commercial cultivars.
What are the factors responsible for spoilage of fruits and vegetables during storage? Discuss the methods to minimize this spoilage.
Define the terms monoecious and dioeciously with examples of fruits. Discuss their significance in breeding.

SECTION B

5. write short notes on any four of the following in about 150 words each:

rejuvenation of old orchards
Apical dominance and its significance in sugarcane
Tissue culture and its application in agriculture
Control of mango mites and mealy bugs
Biological control of pests and diseases

6. Answer the following in about 150 words each.
Discuss the package of practices to be followed in rose cultivation for export under the headings:
Selection of varieties, propagation and planting
Structures required for production and packaging
Water, nutrient and pests and diseases management
Harvesting, packaging and marketing.

7. Answer the following in about 150 words each:
What are the carious constituents of fruits? Discuss their importance in human diet.
Differentiate between preserve and Candy. Describe the method for making anole preserve.
Explain the causes of unfruitfulness in fruit crops. Suggest their remedies.
Describe the temperature induced injuries in field crops. Suggest the methods by which these injuries could be avoided.

8. Answer the following in about 15 words each:
Describe plant tissue. Discuss their role in pant growth and development.
Define the terms diffusions osmotic pressure, turgor pressure and imbibitions. Discuss the factors influencing the osmotic pressure and transpiration in plants.
Discuss the occurrence and distribution of plant enzymes. Explain their role in fruit ripening.
Describe cell division and its significance in plant.