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Course Overview (in Hindi)
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Ashish Singh
IB ACIO II- 2017(Mains Qualified), UPSC aspirant Exam cleared- SSC CPO (2014), SSC CGL Tier (2016 - Qualified for Mains), DSSSB (Mains)

Unacademy user
super explain bhai 👌
Ankur Yadav
5 months ago
😊
sir with current affairs because environment part is last previous yr papers mostly current affairs related quest asked
Ashish Singh
3 months ago
Okay, thank you for your feedback
sir if possible pls cover current affairs of environment along with d mcq...
Ashish Singh
3 months ago
ok, and Thank you for your feedback
sir hindi me bhi milege
Ashish Singh
3 months ago
Hindi me typing bhot mushkil Hoti hai, isliye aap yha se Sun k notes prepare kr skte ho
  1. By-Ashish Singh


  2. Ashish Singh VERIFIED Edit Profile IB ACIO II-2017(Mains Qualified), UPSC aspirant Exam cleared-SSC CPO (2014), SSC CGL Tier (2016-Qualified for Mains), DSSSB (Mains) 19,313 Views in last 30 days 289,361 Lifetime Views 62 Courses 9.9k Followers 28 Following NEWS Indian Polity By Ashish Singh By Ashish Singh By Ashish Singh February 2019: The Hindu Daily Editorial and Prelims Based.. (Hindi) February, 2019 The Hindu Daily Editorial and Prelims... (Hindi) Understanding Entire Polity Through MCQS 39 Lessons 38 Lessons 5 Lessons


  3. Ecology .Ecology is a scientific study of the reciprocal relationship between organisms (including microbes, plants, animals, man) with their environment. .It deals with the ways in which organisms are moulded by their environment, how they make use of environmental resources including energy flow and mineral cycling. The term ecology was coined only as late as 1868. It has been derived from two Greek words namely, Oiko" meaning home or place to live in and 'logos . meaning study. .Literally it is the study of the home of nature. . Ecology is defined as - "a scientific study of the relationship of the living organisms with each other and with their environment.


  4. Concept of environment . The relationship and interaction between' . organism and environment are highly complex No organism can live alone without interacting with other organisms. So each organism has other organisms as a part of its environment. Each and everything with which we interact or which we need . for our sustenance forms our environment. The environment is not static .Both biotic and abiotic factors are in a flux . and keeps changing continuously.


  5. Biotic And Abiotic Components Components of Environment Abiotic Biotic Energy Radiation Green plants Non-green plants Decomposers Parasites Temperature & heat flowDeco Water tmospheric gases and wind |symbionts Fire Gravity Topography Soil Geologic substratum Animals Man


  6. External environment of fish For instance: Let's take the environment of a fish in the pond Its environment consists of abioti components such as light, temperature, including the water . in which nutrients, oxygen, other gases and organic matter are dissolved .The biotic environment consists of microscopIc organisms called plankton as well as Aquatic plants and animals and decomposers.


  7. Internal environment of fish . t is enclosed by the outer body surface. Seawater about 35% Most urea retained by kidneys Gils block loss of urea . > The internal environment is relatively stable as compared to the external environment. Blood 35% or higher > However, it is not absolutely constant. Injury illness or excessive stress upsets the internal environment. Water absorbed by gills and skin Salts excreted n urine Ingests salts with foods Salts excreted by rectal gland (a) Cartilaginous fishes Red blood Salts Urea - For example, if a marine fish is transferred to a fresh water environment, it will not be able to survive.


  8. LEVELS OF ORGANISATIONS IN ECOLOGY Individual Organism is an individual living being that has the ability to act or function independently. It may be plant, animal, bacterium, fungi, etc. Population Population is a group of organisms usually of the same species, occupying a defined area during a specific time. Community If we look around our self, we will notice that population of plants and animals seldom occur by themselves. The reason for this is quite obvious., In order to survive, individuals of any one species., depend on individuals of different species Individual Population Community Ecosystem Biome Biosphere


  9. Communit .For eg: Animals require plants for - food and -Trees for shelter. Plants require animals for - pollination, . Hawk seed dispersal, and soil microorganism to facilitate nutrient supply. Communities in most instances are named after the dominant plant form (species) For example: A grassland community is dominated by grasses, though it may contain herbs, shrubs, and trees, along with associated animals of different species. A community is not fixed or rigid; communities may be large or small Flycatcher Pronghorn Mule deer . Butterfly Coyote Jackrabbit Grasses


  10. Types of Community .On the basis of size and degree of relative independence communities may be divided into .two types: .(a) Major Community These are large-sized, well organized and Urban Suburbarn relatively independent. They depend only on the sun's energy from outside and are independent of .the inputs and outputs from adjacent communities. E.g: tropical ever green forest in the North-East .(b) Minor Communities . These are dependent on neighbouring Rura communities and are often called societies. They are secondary aggregations within a major community and are not therefore completely independent units as far as energy and nutrient dynamics are concerned. eg: A mat of lichen on a cow dung pad. . .


  11. Eco-System An ecosystem is defined as a structural and functional unit of biosphere consisting of community unlightand heat of living beings and the physical environment, both interacting and exchanging materials between them. Termite mounds .An Ecosystem is a complex set of relationship Insects Fungi among the living resources, habitats, and residents .It includes-plants, trees, animals, fish, birds, . micro-organisms, water, soil, and people. Rotting log roton Bacteria Plankton Ecosystems vary greatly in size and elements but each is a functioning unit of nature. Everything - that lives in an ecosystem- is dependent on the other species and elements that are also part of that ecological community. If one part of Algae . an ecosystem is damaged or disappears, if has an impact on everything else.