upsc agriculture optional question paper 2019: CSE Mains Paper-II
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Civil Services Mains Exam: Agriculture Optional Paper-2 (2019)
In this article, we talk about UPSC mains exam agriculture optional paper-ii previous year questions.
Marks- 250 Time- Three Hours
Question Paper Specific Instructions:
Please read each of the following instructions carefully before attempting questions.
- There are EIGHT questions divided into two sections.
- A candidate has to attempt FIVE questions in all.
- Questions no 1 and 5 are compulsory and out of the remaining, THREE are to be attempted choosing at least ONE from each section.
- The number of marks carried by a question /part is indicated against it.
- Word limit in questions, wherever specified should be adhered to.
- Attempts of questions shall be counted in chronological order. Unless struck off, an attempt of a question shall be counted even if attempted partly. Any page or portion of the page left blank in the answer book must be clearly struck off.
Q1. Answer the following questions in about 150 words each: 10x5=50 marks
(a) Define mutation. Write its classification and role in crop improvement. 10 marks
(b) Define dormant and hard seeds. Describe the physiological basis of seed dormancy along with methods to overcome this problem. 10 marks
(c) What makes a nutrient element essential for plant growth and development? Which is the latest addition to the existing list of 16 essential plant nutrients? Mention its deficiency symptoms and functions. 10 marks
(d) How is the patent system different from the plant variety protection system? 10 marks
(e) Enlist the storage pests of pulses with their nature of damage. Write their management practices. 10 marks
Q2. (a) What are the major components that constitute cell structure? Describe their functions. 20 marks
(b) method and give its importance in crop improvement, with suitable examples. 15 marks
(c) Write important objectives of seed testing along with the methods used for testing seed viability, seed vigor, and genetic purity of a variety. 15 marks
Q3. (a) Explain the role of plant growth substances in the various developmental stages of a plant with special reference to horticultural crops. 20 marks
(b) Discuss the reasons for food grain surplus. Describe food grain production and consumption trends in India. 15 marks
(c) Explain sterility systems in crop plants. Describe the role of male sterility in hybrid seed production in vegetable crops with suitable examples. 15 marks
Q4. (a) Write the various methods of plant breeding and describe the back cross method with its importance in development of crop varieties. 20 marks
(b) Describe the various types of field and seed standards followed in seed production and certification programs. 15 marks
(c) Name the major fruit crops along with the states commercially growing these crops. Describe the package of practices for papaya cultivation in India. 15 marks
Q5. Answer the following questions in about 150 words each: 10x5=50 marks
(a) How are vitamins classified? Name the blood clotting vitamin. Give its various functions and sources. 10 marks
(b) What is polyploidy? Describe its application in crop improvement with its limitations. 10 marks
(c) Describe the role of plant genetic resources conservation in crop improvement. 10 marks
(d) Write the merits and limitations of using genetically modified crops. Present a brief account of the application of GM technology in India. 10 marks
(e) “The rate of transpiration governs the growth of a plant.” Justify the statement with reasoning for how transpiration is influenced by the environment. 10 marks
Q6. (a) Define protected cultivation along with its major advantages and challenges for adoption in India. Describe the plastic low tunnel technology for off-season cultivation of vegetables. 20 marks
(b) various Laws of Heredity. Explain the Law of Independent Assortment with suitable examples. 15 marks
(c) Write in detail about bacterial diseases of crop plants and their suitable management practices. 15 marks
Q7. (a) Give the present status of vegetable cultivation in India and describe the package of practices of rabi and Kharif onion cultivation in India. 20 marks
(b) What is pesticide resistance? Differentiate between simple and multiple resistance in insect pests with examples. Prescribe measures to overcome pesticide resistance problems. 15 marks
(c) Describe gene pyramiding and gene introgression with their importance in developing disease-resistant varieties. 15 marks
Q8.(a) Name the commercial floriculture crops being grown in India. Describe the package of practices of year-round cultivation of chrysanthemum in India. 20 marks
(b) Elaborate the role of seed industry in the development of Indian agriculture. 15 marks
(c) Write the principles of biological control of plant pathogens. Describe the recent trends in bio-control strategies in the field of crop disease management. 15 marks