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Chapter 2 part 5 - Biotic Interaction Types (in Hindi)
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Different types of biotic interactions explained in detail

Aartee Mishra is teaching live on Unacademy Plus

Aartee Mishra
Delhi University Topper Post Graduation in History YouTube & Telegram Channel - Rank secure. Successfully Taught 40 GS Batches/ Motivator

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thnku maam for the lesson
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  1. Environment Book Summary Presented B Aartee Mishra


  3. BIOTIC INTERACTION Biotic Interaction Organisms living in this earth are interlinked to each other in one way or other. The interaction between the organisms is fundamental for its survival and functioning of ecosystem as a whole. S.No. IypeSpices 1 Secies 2 Mutualism 2. Commensalism)(0) 3. Competition 4. Predation 5. Parasitism 6.Amensalism Types of biotic interaction Mutualism: both species benefit. Example: in pollination mutualisms, the pollinator gets food (pollen, nectar), and the plant has its pollen7. Neutralism ransferred to other flowers for cross- Beneited fertilization (reproduction). (-Harmed (0) Neither Benefited nor harmed

  4. Commensalism: one species benefits, the other is unaffected. .Example: cow dung provides food and shelter to dung beetles. The beetles have no effect on the cows. Competition: both species are harmed by the interaction. Example: if two species eat the same food, and there isn't enough for both, both may have access to less food than they would if alone. They both suffer a shortage of food Predation and parasitism: one species benefits, the other is harmed. Example : predation-one fish kills and eats parasitism: tick gains benefit by sucking blood; host is harmed by losing blood. Ainensalism One species is harmed, the other is unaffected. Example: A large tree shades a small plant, retarding the growth of the small plant. The small plant has no effect on the large tree

  5. Neutralism There is no net benefit or harm to either species. Perhaps in some interspecific interactions, the costs and benefits experienced by each partner are exactly the same so that they sum to zero. It is not clear how often this happens in nature. Neutralism is also sometimes described as the, relationship between two species inhabiting the same space and using the same resources, but that have no effect on each other. BIOGEO CHEMICAL CYCLE . The living world depends upon the energy flow and the nutrients circulation that occurs through ecosystem Both influence the abundance of organisms, the metabolic rate at which they live, and the complexity of the ecosystem

  6. Energy flows through ecosystems enabling the organisms to perform various kinds of work and this energy is ultimately lost as heat forever in terms of the usefulness of the system. On the other hand, nutrients of food matter never get used up. They can be recycled again and again indefinitely.. .For e.g. when we breathe we may be inhaling several million atoms of elements that may have been inhaled by our ancestors or other organisms. Carbon, hydrogen, oxygen, nitrogen and phosphorus as elements and compounds make up 97% of the mass of our bodies and are more than 95% of the mass of all living organisms

  7. Nutrient Cycling . The nutrient cycle is a concept that PRODUCERS algoe, lichens ad green plamts describes how nutrients move from the physical environment to the living organisms, and subsequently recycled back to the physical environment. toten oler and mineral salts SOIL humus and minerols CONSUMERS dit Among the most important as nutrient cycles are the carbon nutrient cycle and the nitrogen nutrient cycle. decongosition die . Both of these cycles make up an DECOMPOSERS fungi and bacteria essential part of the overall soil nutrient cycle Nutrient cycdling

  8. Types of Nutrient Cycle Based on the replacement period a nutrient cycle is referred to as Perfect or Imperfect cycle. A perfect nutrient cycle is one in which nutrients are replaced as fast as they are utilised. In contrast sedimentary cycles are considered relatively imperfect, as some nutrients are lost from the cycle and get locked into sediments and so become unavailable for immediate cycling. Water Cycle (Hydrologic) .The hydrologic cycle is the continuous circulation of water in the Earth- atmosphere system which is driven by solar energy. Water on our planet is stored in major reservoirs like atmosphere, oceans, lakes, rivers, soils, glaciers, snowfields, and groundwater

  9. Water moves from one reservoir to another by the processes of evaporation, transpiration, condensation, precipitation, deposition, runoff, infiltration, and groundwater flow. Condensation Precigitation Evaporatien Water Cycle

  10. The Carbon Cycle Carbon from the atmosphere moves to green plants by the process of photosynthesis, and Photosynthesis then to animals. By process of respiration and decomposition of dead organic matter itmaita returns back to atmosphere. It is usually as E short term cycle. Fossil fuels are burned the carbon stored in them is released back into the atmosphere as carbon-dioxide Respiration Food Nutrients Organic dead organic material Waste materials Biodegradation Biodegradaton COy Carbon Cycle