Hi Aspirant,

The syllabus for entrance examination in environmental science is quite huge and consists of several units.The most important subjects being Ecology & Environment: Definition, Scope-Branches of Ecology. Components of the Environment-Atmosphere, Lithosphere, Hydrosphere and Biosphere, Applications of Ecology, Concept of levels of organization and biosphere. Abiotic factors-Nature of response of organisms to Abiotic factors; Laws of limiting factors and Tolerance. Autecology-Definition-Comparison of autecology and synecology, Concept of species, speciation, characteristics of population. Basic components of an ecosystem-structure and functional aspects of an Ecosystem-Tropic structure-Ecological Niche-Ecological Dominance-Stability, Diversity rule. Homeostasis, aquatic Ecosystem-physico-chemical nature of lentic and lotic ecosystems. Types of aquatic ecosystemstructure and organization with examples of fresh water Ecosystem. Marine water ecosystem, estuarine water Ecosystem-Mangroves. Terrestrial Ecosystem: Tundra forest, Grassland, Desert ecosystem. Energy flow in ecosystems-Laws of Thermodynamics. Productivity-Biomass production, primary productivity and net productivity. Food Chain – Types of food chain with examples, Foodweb, Ecological pyramid of biomes. Number and energy-inverted ecological pyramids. Biogeochemical Cycles – Availability and rate of cycling of nutrients-gaseous and Sedimentary cycle.

and other subjects like soil fundamentals radioactive decay etc.

Hope it helps!!