Download Environmental science Notes 11th Class Jkbose, CBSE 2022-23 free Pdf 

Environmental science Notes 11th Class Jkbose, CBSE 2022-23

ENVIRONMENTAL SCIENCE (Syllabus)

Class 11th M. Marks: 100 Practical: 30 Theory:70

Unit 1:- Understanding Environment (7 marks)

•  Concept of Environment and its types; physical, biological; and social environment.

•  Scope and importance of Environmental Science.

•  Components of environment.

a. Lithosphre

b. Hydrosphere

c. Atmosphere

d. Biosphere

•  Origin of Earth

•  Human and environment relationship.

Unit 2: Ecology (7 marks)

•  Ecology (definition and types)

•  Concept and structure of ecosystem)

•  Trophic relationship (food chain, food web, ecological pyramids)

•  Functions of ecosystem (energy flow in an ecosystem)

•  Ecological Succession (types and stages)

Unit 3: Ecological Interactions and Adaptations (7 marks)

•  Ecological interaction and its types

•  Inter – specific interaction: positive interaction (mutualism, proto-cooperation, commensalism, sysmbiosis and scavenging), negative interaction (parasitism. Competition and ammensalism)

•  Intra – specific interaction: cooperation and competitive

•  Adaptations: concept and need

•  Types of adaptations (with special reference to wind, light and temperature)

Unit 4: Population Ecology (7 marks)

•  Concept of species, population and communities.

•  Population Dynamics (population size and density, dispersion, natality, mortality, age 

structure)

•  Population growth (exponential and logistic growth)

•  Factors regulating population growth (competition, weather and climate, territory, 

predation, natural disasters and diseases)

•  Human population growth (Malthusain theory and neo- Malthusian theory, Demographic Transition)

Unit 5: Energy Resources (7 marks)

•  Concept of energy resources

•  Non- renewable energy resources: coal, petroleum, natural gas 

•  Renewable energy resources (solar wind and hydropower)

•  Nuclear energy (uses and limitations)

•  Biofles

Unit 6: Earth’s Environment and Natural Disasters (7 marks)

•  Atmosphere: structure and composition

•  Hydrosphere: distribution, hydrological cycle

•  Lithosphere: structure

•  Biogeochemical cycles (Carbon, Nitrogen and Phosphorous)

•  Natural disasters (earthquakes, floods and volcanoes)

Unit 7: Environmental education and Awareness (7 marks)

•  Concept and need of environmental education

•  Formal and informal means of environmental education

•  Modes of environmental awareness

•  Role of NGOs

•  Environmental movements (Chipko movement, Narmada Bachao Andolan)

Unit 8: Environmental Health (7 marks)

•  Concept of health and disease

•  Water borne diseases (Cholera, Hepatistis, Typhoid)

•  Air borne diseases (Influenza, Tuberculosis)

•  Soil borne disease (Tetanus; Botulism)

•  Occupational diseases (Silicosis, Asbestosis)

Unit 9: Natural Resources (7 marks)

•  Forest resources (types and uses)

•  Animal resources (fish and livestock)

•  Water resources (fresh and marine)

•  Mineral resources (type and uses)

•  Medicinal plants (with special reference to J&K)

Unit 10: Managing Agriculture (7 marks)

•  Concept of traditional and modern agriculture

•  Green revolution and white revolution

•  Pesticides and fertilizers (types, advantage and disadvantages)

•  Integrated pest control

•  Food security

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