The **Agriculture Officer / Agriculture Development Officer (ADO) / Agriculture Supervisor** exams test a wide spread of applied agricultural science. This free guide maps the **subjects examiners draw from** and gives **original practice MCQs with answers and explanations** so you can gauge your readiness. > **Honesty note:** These are **original practice questions written by Zenith Education** on the standard agriculture syllabus. They are *not* reproduced official previous-year papers. ## Subjects the exam covers - **Agronomy** — cropping systems, tillage, irrigation, weed management. - **Soil Science** — soil fertility, pH, nutrients, conservation. - **Horticulture** — fruits, vegetables, floriculture, post-harvest. - **Agricultural Botany & Genetics and Plant Breeding** — plant physiology, heredity, crop improvement. - **Plant Pathology & Entomology** — diseases, pests and their management. - **Agricultural Chemistry, Economics and Extension** — fertilisers, farm economics, extension methods. - **Seed Science, Food Science, Dairy, Veterinary, Fisheries and Forestry** — allied specialisations. ## How to prepare 1. Map each subject above to your **official notification**. 2. Build **concise, exam-mapped notes** per subject instead of bulky textbooks. 3. Master the **high-yield facts** — macronutrients, crop seasons, plant hormones, soil pH, improved varieties. 4. Practise **statement-based MCQs** under time. ## Free practice MCQs (with answers & explanations) **Q1. The "Father of the Green Revolution in India" is —** A) Norman Borlaug B) M. S. Swaminathan C) Verghese Kurien D) C. Subramaniam **Answer: B.** M. S. Swaminathan led India's Green Revolution; Norman Borlaug is credited as its father worldwide. **Q2. The three primary macronutrients required by crops are —** A) Nitrogen, Phosphorus, Potassium B) Calcium, Magnesium, Sulphur C) Iron, Zinc, Boron D) Carbon, Hydrogen, Oxygen **Answer: A.** N, P and K are the primary macronutrients supplied through fertilisers. **Q3. Rhizobium bacteria fix atmospheric nitrogen in the root nodules of —** A) Cereals B) Oilseeds C) Leguminous (pulse) crops D) Millets **Answer: C.** The Rhizobium–legume symbiosis converts atmospheric N into a plant-usable form. **Q4. The plant hormone chiefly responsible for fruit ripening is —** A) Auxin B) Cytokinin C) Gibberellin D) Ethylene **Answer: D.** Ethylene is the gaseous ripening hormone (ethephon is used commercially). **Q5. Jute is popularly known as the —** A) Golden fibre B) King of fibres C) Silver fibre D) White gold **Answer: A.** Jute is called the golden fibre for its colour and economic value. **Q6. A soil with a pH of exactly 7.0 is —** A) Acidic B) Neutral C) Alkaline D) Saline **Answer: B.** pH 7 is neutral; below 7 is acidic and above 7 is alkaline. **Q7. Kharif crops (e.g., rice, maize, cotton) are sown with the onset of the —** A) Winter B) South-West monsoon C) Summer D) Retreating monsoon **Answer: B.** Kharif crops are sown June–July with the South-West monsoon and harvested in autumn. **Q8. The transfer of pollen grains from the anther to the stigma is called —** A) Fertilisation B) Germination C) Pollination D) Transpiration **Answer: C.** Pollination precedes fertilisation in flowering plants. ## Get the full notes These are only a taste. Zenith's **Agriculture Officer Master Notes** cover every subject above — **PYQ-mapped and bilingual (Hindi & English**, regional on request) — with a **free sample** of each unit. - 📗 **[Browse Agriculture Officer notes →](/cat/agri)** - 📖 **[Read a free sample →](/samples)** *Zenith Education, Jaipur — PYQ-mapped master notes for Agriculture, Scientific Officer, Nursing, Engineering, Polytechnic and more. English & Hindi medium, regional on demand.*