UPSC IFS Exam Syllabus 2025 - Paper-wise Syllabus, Latest Syllabus

Updated By Bipasha Ray on 26 Aug, 2024 16:58

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UPSC IFS 2025 Syllabus

The UPSC IFS 2025 Syllabus was laid down by the Union Public Service Commission (UPSC) in detail for the IFS exam for the test takers. The UPSC IFS 2025 syllabus is different for both Preliminary and main exams. Candidates willing to be recruited in Forestry Services should have a good understanding of the syllabus of UPSC IFS 2025. If candidates are aware of the syllabus, then the preparation for the examination becomes easy and smooth. The syllabus helps in understanding the portions of the subjects that will combine to form the question paper of the UPSC IFS examination. 

Also Check: UPSC IAF Result 2025

Upcoming Exams :

UPSC IFS Preliminary Exam Syllabus 2025

Students can check out the UPSC IFS syllabus 2025 for Preliminary exam in the table given below.

PaperTopics
General Paper-1
  • Current affairs that are of national as well as international importance
  • Indian history with special emphasis on Indian national movement
  • The world geography with a specific focus on India- the physical, social and economic geography of India is particularly important
  • Indian polity and governance- thorough knowledge of the constitution, Panchayati raj, political system, public policies and schemes, fundamental rights, etc.
  • Sustainable development, economic and social development, demographics of poverty, employment, inclusion, and social sector initiatives.
  • Environment, biodiversity, social issues related to the environment, climate change, on a generic basis, and subject specialization is not required.
  • General Science.
General Paper 2
  • English comprehension
  • Communication and interpersonal skills
  • Logical and analytical reasoning
  • Problem-solving and decision-making based questions
  • General mental ability
  • Basic numerical ability- orders of magnitude, number, and their relations, charts, graphs, tables, data sufficiency
  • Basic English language, grammar, and vocabulary

Also Read: UPSC IFS Previous Year Question Paper

UPSC IFS Mains Exam Syllabus 2025

After passing the UPSC IFS Prelims, candidates should go through the details of the UPSC IFS 2025 Mains Exam Syllabus. The UPSC IFS 2025 Mains exam will have a six-question paper covering the topics listed below:

UPSC IFS 2025 Syllabus for Compulsory Subjects

SubjectSyllabus 
Paper I (General English)
  • Essay in the English language. 
  • Questions designed to test the understanding of the syllabus. Passages will usually be set for a summary.
Paper-II (General Knowledge)
  • General Knowledge 
  • Knowledge of current events 
  • Study and observation of scientific aspects 

   The paper will also include questions on Indian Polity, such as:

  • The political system
  • The Constitution of India
  • History of India
  • Geography of nature

UPSC IFS 2025 Syllabus for Optional Subject 

Subject

Syllabus

Agriculture 

Paper - I 

  • Ecology and its relevance to man, natural resources, their sustainable management, and conservation. 
  • Climatic elements as factors of crop growth, the impact of changing the environment on cropping patterns as indicators of environments.
  • Physical and social environment as factors of crop distribution and production. 
  • Cropping pattern in different agro-climatic zones of the country. Impact of high yielding and short-duration varieties on shifts in cropping pattern. 
  • Environmental pollution and associated hazards to crops, animals, and humans. 
  • Concepts of multiple cropping, multistorey, relay, and intercropping, and their importance in relation to food production. 
  • Package practices for production of important cereals, pulses, oilseeds, fibers, sugar, and commercial and fodder crops are grown during Kharif and Rabi seasons in different regions of the country. 
  • Essential plant nutrients and other beneficial elements in soils and plants. 
  • The technology of stabilizing agriculture production in rain-fed agriculture areas. 
  • Important features, scope, and propagation of various types of forestry plantations such as extension, social forestry, agroforestry, and natural forests. Weeds, their characteristics, dissemination, and association with various crops; their multiplication; cultural, biological, and chemical control of weeds. Soil-physical, chemical, and biological properties. 
  • Processes and factors of soil formation. Modern classification of Indian soils, Mineral and organic constituents of soils, and their role in maintaining soil productivity.
  • Principles of soil fertility and its evaluation for judicious fertilizer use, integrated nutrient management. Losses of nitrogen in the soil, nitrogen-use efficiency in submerged rice soils, and nitrogen fixation in soils. Fixation of phosphorus and potassium in soils and the scope for their efficient use. Problem soils and their reclamation methods. Soil conservation planning on a watershed basis. Erosion and run-off management in hilly, foothills, and valley lands; processes and factors affecting them. Dryland agriculture and its problems. 
  • Water-use efficiency in relation to crop production, criteria for scheduling irrigations, ways, and means of reducing run-off losses of irrigation water. Drip and sprinkler irrigation. Drainage of water-logged soils, quality of irrigation water, the effect of industrial effluents on soil, and water pollution. Farm management, scope, importance and characteristics, farm planning. Optimum resources use and budgeting. Economics of different types of farming systems. Marketing and pricing of agricultural inputs and outputs, price fluctuations and their cost; the role of cooperatives in the agricultural economy; types and systems of farming and factors affecting them. Agricultural extension, its importance, and role, methods of evaluation of extension programs, socio-economic survey and status of big, small, and marginal farmers and landless agricultural laborers; farm mechanization and its role in agricultural production and rural employment. Training programs for extension workers; lab to-land programs. 

Paper - II 

  • Mutation-micro and macro-and their role in crop improvement. Variation, components of variation. Heritability, sterility and incompatibility, classification and their application in crop improvement. 
  • Cell Theory, cell structure, cell organelles and their function, cell division, nucleic acids-structure and function, gene structure and function. Laws of heredity, and their significance in plant breeding. Chromosome structure, chromosomal aberrations, linkage and cross-over, and their significance in recombination breeding. Polyploidy, euploid, and aneuploids. 
  • Cytoplasmic inheritance, sex-linked, sex influenced, and sex-limited characters. History of plant breeding. Modes of reproduction, selfing, and crossing techniques. Origin and evolution of crop plants, the center of origin, the law of homologous series, crop genetic resources-conservation and utilization. Application of principles of plant breeding to the improvement of major field crops.
  • Pure-line selection, pedigree, mass, and recurrent selections, combining ability, its significance in plant breeding. Hybrid vigor and its exploitation, backcross method of breeding, breeding for disease and pest resistance, and the role of interspecific and intergeneric hybridization. 
  • Role of biotechnology in plant breeding. Improved varieties, hybrids, and composites of various crop plants. Seed technology, its importance. Different kinds of seeds and their seed production and processing techniques. Role of public and private sectors in seed production, processing, and marketing in India. 
  • Physiology and its significance in agriculture. Imbibitions, surface tension, diffusion, and osmosis. Absorption and translocation of water, transpiration, and water economy. Enzymes and plant pigments; photosynthesis-modern concepts and factors affecting the process, aerobic and non-aerobic respiration; C, C, and CAM mechanisms. Carbohydrate, protein, and fat metabolism. Growth and development; photoperiodism and vernalization. Auxins, hormones, and other plant regulators and their mechanism of action and importance in agriculture. 
  • Physiology of seed development and germination; dormancy. Climatic requirements and cultivation of major fruits, plants, vegetable crops, and flower plants; the package of practices and their scientific basis. Handling and marketing problems of fruit and vegetables. Principal methods of preservation of important fruits and vegetable products, processing techniques, and equipment. Role of fruits and vegetables in human nutrition. 
  • Raising of ornamental plants, and design and layout of lawns and gardens. Diseases and pests of field vegetables, orchards, and plantation crops of India. Causes and classification of plant pests and diseases. Principles of control of plant pests and diseases Biological control of pests and diseases. Integrated pest and disease management. Epidemiology and forecasting. Pesticides, their formulations, and modes of action. Compatibility with rhizobial inoculants. Microbial toxins. Storage pests and diseases of cereals and pulses, and their control. Food production and consumption trends in India. National and international food policies. Production, procurement, distribution, and processing constraints. Relation of food production to the national dietary pattern, major deficiencies of calorie and protein. 

Agricultural Engineering 

Paper I

Section A

  • Soil and Water Conservation
  • Aerial Photography and Remote Sensing

Section B 

  • Irrigation and Drainage
  • Agricultural Structures

PAPER-II 

Section A

  • Farm Power and Machinery
  • Agro-energy

Section B 

  • Agricultural Process Engineering
  • Instrumentation and computer applications in Agricultural Engineering

Animal Husbandry and Veterinary Science 

Paper-I

  • Animal Nutrition
  • Animal Physiology
  • Livestock Production and Management
  • Genetics and Animal Breeding

Paper-II 

  • Health and Hygiene
  • Animal Diseases 
  • Veterinary Public Health
  • Milk and Milk Products Technology
  • Meat Hygiene and Technology
  • Extension

Botany

Paper - I

  • Microbiology and Plant Pathology
  • Cryptogams
  • Phanerogams: Gymnosperms
  • Plant Utility and Exploitation
  • Morphogenesis

Paper - II

  • Cell Biology
  • Genetics, Molecular Biology and Evolution
  • Plant Breeding, Biotechnology and Biostatistics
  • Physiology and Biochemistry
  • Ecology and Plant Geography

Chemistry

Paper - I 

  • Atomic structure
  • Chemical bonding
  • Coordination chemistry
  • Chemical kinetics
  • Electrochemistry
  • Phase equilibria and solutions
  • Non-Aqueous Solvents
  • Photochemistry
  • Surface phenomena and catalysis
  • Bio-inorganic chemistry
  • General chemistry of 'f' block elements
  • Solid State
  • Thermodynamics and statistical thermodynamics
  • The gaseous state

Paper - II 

  • Delocalised covalent bonding
  • Pericyclic reactions
  • Chemistry and mechanism of reactions
  • Polymeric Systems
  • Synthetic uses of reagents
  • Photochemistry
  • Principles of spectroscopy and applications in structure elucidation

Chemical Engineering

Paper - I

Section A

  • Fluid and Particle Dynamics
  • Mass Transfer
  • Heat Transfer 

Section B 

  • Novel Separation Processes 
  • Process Equipment Design
  • Process Dynamics and Control

Paper-II

Section A 

  • Material and Energy Balances
  • Chemical Engineering Thermodynamics 
  • Chemical Reaction Engineering

Section B 

  • Chemical Technology
  • Environmental Engineering and Safety 
  • Process Engineering Economics

Civil Engineering

Paper - I 

Part-A: 

  • Engineering Mechanics
  • Strength of Materials
  • Structural Analysis

Part-B:

  • Design of Structures: Steel, Concrete and Masonry Structures.

Part-C 

  • Fluid Mechanics
  • Open Channel Flow
  • Hydraulic Machines

Part-D 

  • Geo-Technical Engineering

Paper - II 

Part-A 

  • Construction Technology
  • Construction Equipment
  • Construction Planning and Management

Part-B

  • Survey and Transportation Engineering

Part-C

  • Hydrology, Water Resources and Engineering

Part-D

  • Environmental Engineering

Zoology

Paper - I 

Section-A

  • Non-Chordata and Chordata

Section- B

  • Ecology
  • Ethology
  • Economic Zoology
  • Biostatistics
  • Instrumental methods

Paper - II 

Section-A

  • Cell Biology
  • Genetics
  • Evolution 
  • Systematics

Section-B 

  • Biochemistry 
  • Physiology
  • Developmental Biology

Statistics 

Paper - I

  • Probability
  • Statistical Inference
  • Linear Inference and Multivariate Analysis
  • Sampling Theory and Design of Experiments

Paper - II

  • Industrial Statistics
  • Optimization Techniques
  • Quantitative Economics and Official Statistics
  • Demography and Psychometry

Physics 

Paper - I 

Section-A

  • Classical Mechanics
  • Special Relativity, Waves & Geometrical Optics
  • Physical Optics

Section-B 

  • Electricity and Magnetism
  • Electromagnetic Theory & Black Body Radiation
  • Thermal and Statistical Physics

Paper - II 

Section-A

  • Quantum Mechanics I
  • Quantum Mechanics II & Atomic Physics
  • Molecular Physics

Section-B 

  • Nuclear Physics
  • Particle Physics & Solid State Physics
  • Electronics

Mechanical Engineering

Paper - I

  • Theory of Machines
  • Mechanics of Solids
  • Engineering Materials
  • Manufacturing Science
  • Manufacturing Management
  • Elements of Computation

Paper - II 

  • Thermodynamics
  • I.C. Engines, Fuels and Combustion
  • Heat Transfer, Refrigeration and Air Conditioning

Mathematics 

Paper - I 

Section-A

  • Linear Algebra 
  • Calculus 
  • Analytic Geometry

Section-B

  • Ordinary Differential Equations
  • Dynamics, Statics and Hydrostatics
  • Vector Analysis

Paper - II 

Section-A

  • Algebra
  • Real Analysis
  • Complex Analysis
  • Linear Programming

Section-B

  • Partial differential equations
  • Numerical Analysis and Computer programming
  • Numerical integration
  • Numerical solution of ordinary differential equations
  • Computer Programming
  • Mechanics and Fluid Dynamics

Geology

Paper - I 

Section-A

  • General Geology
  • Geomorphology and Remote Sensing
  • Structural geology

Section-B

  • Paleontology 
  • Stratigraphy and Geology of India
  • Hydrogeology and Engineering Geology

Paper - II 

Section-A

  • Mineralogy 
  • Igneous and Metamorphic Petrology
  • Sedimentology

Section-B

  • Economic Geology
  • Mining Geology
  • Geochemistry and Environmental Geology

Forestry

Paper - I 

Section A

  • Silviculture - Genera
  • Silviculture - Systems
  • Silviculture - Mangrove and Cold desert
  • Silviculture of trees

Section B 

  • Agroforestry, Social Forestry, Joint Forest Management and Tribology 
  • Environmental Conservation and Biodiversity
  • Forest Soils, Soil Conservation and Watershed management 
  • Tree Improvement and Seed Technology

Paper - II 

Section A 

  • Forest Working Plan
  • Forest Management and Management Systems
  • Forest Mensuration and Remote Sensing
  • Surveying and Forest Engineering

Section B 

  • Forest Ecology and Ethnobotany
  • Forest Protection & Wildlife Biology
  • Forest Resources and Utilization
  • Forest Economics and Legislation

Also Read

UPSC IFS Answer Key 2025

UPSC IFS Mock Test 2025

Best Books for UPSC IFS 2025

UPSC IFS Coaching Institutes

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