It is found in alkaloids,urea. Thank you. Really helped me to do my assignment, Your email address will not be published. (7) Plants can then assimilate this ammonium ion or still other bacteria can change it to nitrate by nitrification. From an examination perspective, the nitrogen cycle is a frequently asked topic – either as a theoretical question or a diagrammatic one. It is required for the survival of all life on earth. Required fields are marked *, The process of ammonia formation is called, There are certain bacteria which reduce nitrates back to nitrogen or to ammonia or to some other oxides.This process is called. Questions, many of which have considerable weightage, are asked from this concept. From an academic perspective, the carbon cycle is an important topic asked in the exam. (4) Nitrates are absorbed by plants into their system and utilised for making organic matter(proteins) Filed Under: Class 9, Natural resources Tagged With: biochemical cycle, evaporation, hydrosphere, water cycle About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. Hence, ensure that enough time is devoted to practising and perfecting the diagram. The male reproductive system is an important concept that is often asked in the exam. Nitrogen is a part of many molecules essential to life like proteins,Nucleic acid(DNA and RNA) and some vitamins. Your email address will not be published. However, with enough practice, it can be recreated with ease. A little shading may help secure more marks. (6) After an animal excretes urea or uric acid or after an animal or plant dies,certain bacteria carry out ammonification ie they produce ammonium ions from nitrogen containing molecules. Naturally, the diagram of the process is also quite important to learn and recreate. The diagram is not nearly as complex as the male reproductive system, hence, it does not need much effort to recreate the same in an exam hall. The diagram can be created in many ways, for instance, as a flow chart or as a cycle. Diagrams for Class 9 encompasses many topics – from human anatomy to genetics. (2) There are certain bacteria which convert this inert nitrogen into nitrates and nitrites which can be taken up and used to make required molecules. There are certain bacteria which reduce nitrates back to nitrogen or to ammonia or to some other oxides.This process is called denitrification. Question 5 Name a nitrogen fixing bacteria of non-leguminous plants? It is one of the few important topics which are repetitively asked in the board examinations. Moreover, students can secure only so many marks from theory; to squeeze out the last bit of marks, students have to practice diagrams and illustrate them well. An important point to note is the cell organelles – ensure that all the cell organelles are incorporated in the diagram. Photosynthesis is one of the most important concepts in Class 9 Science. The digestive system is one of the most important systems in the human body. Really well explained point by point, thank you. It is one of the fundamentals of cell biology and forms the basis for more complex topics in higher classes. Just like the nitrogen cycle, the carbon cycle is an important biogeochemical cycle. Economics Chapter 1 Development – Notes & Study Material, Geography Chapter 6 Manufacturing Industries – Notes & Study Material. To explore other important diagrams for class 9 science, register at BYJU’S Biology. Your email address will not be published. Diagram Of Water Cycle The process of ammonia formation is called ammonification.Some micro-organism(nitrobacteria, nitrosomonas)convert ammonia into nitrates.The process is called nitrification. Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. The cell structure is an important concept in Biology. Filed Under: Class 9, Natural resources Tagged With: ammonification, denitrification, nitrification, nitrogen, nitrogen cycle. Last Updated on February 5, 2020 By Mrs Shilpi Nagpal 3 Comments. From an examination perspective, the nitrogen cycle is a frequently asked topic – either as a theoretical question or a diagrammatic one. Just like the male reproductive system, the female reproductive system is an important concept from an academic perspective. Your email address will not be published. Filed Under: Class 9, Natural resources Tagged With: ammonification, denitrification, nitrification, nitrogen, nitrogen cycle About Mrs Shilpi Nagpal Author of this website, Mrs Shilpi Nagpal is MSc (Hons, Chemistry) and BSc (Hons, Chemistry) from Delhi University, B.Ed (I. P. University) and has many years of experience in teaching. The diagram of the water cycle is useful for both Class 9 and 10. The main diagrams of this concept are in the form of cycles – ensure that each and every factor is correctly interlinked with the other factors. 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