Quick Revision Notes for Class 10 Science Chapter 6 Life Processes
Quick revision notes are a summarized form of study material that condenses the most important information from a larger body of text. They are designed to help students review and retain key concepts, facts, and ideas in a short amount of time, usually before an exam or test. Quick revision notes typically include headings, bullet points, diagrams, and other visual aids to make the information easy to understand and remember. They are often used as a quick refresher or reminder of important information, rather than as a substitute for a more in-depth study of the subject matter.
Quick Revision Notes
1. Every living organism has a need of nutrition as it is through nutrition that one obtains energy.
2. The process of intake and utilisation of nutrients (i.e. substances that either release energy or help in the manufacture of bio-molecules) is known as nutrition.
3. Green plants are autotrophs as they synthesize their own food using sunlight, chlorophyll, carbon dioxide and water.
4. Photosynthetic equation:
5. Chlorophyll is a light receiver which can trap solar energy within its molecule.
6. The site of chlorophyll activity is the special plant cell organelles called chloroplasts.
7. In humans the alimentary canal is basically a long tube extending from the mouth to the anus. When we eat something we like, our mouth ‘waters’. This watery fluid is called saliva secreted by the salivary glands.
8. The gastric glands present in the stomach wall of human, release hydrochloric acid, pepsin and mucus.
9. Tooth decay or dental carries causes gradual softening of enamel and dentine. Brushing the teeth after eating removes the dental plaque.
10. Factors that affect photosynthesis are (i) Light, (ii) Temperature, (iii) Water, and (iv) Carbon dioxide.
11. Animal nutrition shows a very wide range. Unicellular organisms like Amoeba obtain food by the process of phagocytosis. The human digestive system climaxes the evolutionary development of the digestive system with numerous glands, digestive juices and organs working together. The various steps of nutrition are ingestion, digestion, absorption and assimilation.
12. The energy-rich molecule in which energy is first captured is adenosine tri-phosphate or ATP.
13. Breathing is a physical process which involves inhalation and exhalation.
14. Respiration is a biochemical process which includes breathing and oxidation of food.
15. Respiration in the presence of oxygen is known as aerobic respiration.
. Respiration that occurs in absence of oxygen is known as anaerobic respiration.
17. During aerobic respiration, food (glucose) is completely broken down into carbon dioxide and oxygen and energy is released in the form of ATP.
18. Aerobic respiration occurs in higher organisms including human being.
19. Anaerobic respiration occurs in certain bacteria, yeast and also in our muscles.
20. The muscles of vertebrate animals can continue working for a minute or two without oxygen.
21. Micro-organisms such as yeast and certain bacteria obtain their energy by anaerobic respiration which is termed fermentation.
22. Common type of fermentation is alcoholic fermentation which is performed by yeast.
23. Direct respiration is seen in unicellular organisms like Amoeba, Paramecium, bacteria and Chlamydomonas.
24. Diffusion is defined as the movement of a substance from a region of higher concentration to a region of lower concentration.
25. Rate of respiration in plants is much slower than in animals.
26. In higher plants, the exchange of gases occurs through stomata and lenticels.
27. Organs of respiration in animals are skin, trachea, gills, lungs, etc.
28. Thin-walled air sacs called alveoli are present in lungs.
29. The blood contains a pigment, haemoglobin, which helps in the transport of carbon dioxide and oxygen.
30. In human beings, four basic processes are involved in respiration—breathing, gaseous transport, tissue respiration and cellular respiration.
31. In the thoracic cavity, the lungs are bound by a convex muscular and elastic sheet called diaphragm.
32. Diffusion is a major method by which transportation of material occurs in single celled organisms like bacteria.
33. Diffusion is the movement of molecules from a region of higher concentration to that of lower concentration resulting in their uniform distribution.
34. The entire surface of the root is not associated with absorption of water and nutrients.
35. Only 1% to 2% of the total water absorbed by the roots, is used up in photosynthesis and metabolic activities.
36. The main process involved in the upward conduction of water and minerals is called transpiration.
37. Through transpiration pull, movement of water and minerals take place.
38. The transportation of food from the leaves to other plant parts is termed translocation.
39. In case of plants, xylem is made of tracheids and vessels. Both are thick walled with
perforations in their cell wall.
40. Water and mineral salts are absorbed by root hair and are transported in the plant by xylem vessels which are long interconnected tubes.
41. Transpirational pull works as a suction force for the upward movement of the sap.
42. Long distance transportation of food material from the leaves to the other parts of the plant is known as ‘translocation’.
43. Phloem is the living tissue that translocates prepared food in aqueous solution. Phloem is made of living cells called ‘sieve tubes’.
44. In human beings the main transporter is the blood which flows in blood vessels and is pumped by the heart.
47. Lymph: Lymph is also known as tissue fluid. It is another type of fluid involved in transportation. It is colourless and contains less protein. Some amount of plasma, proteins and blood-cells escape into intercellular spaces in the tissues in the form of lymph. It drains into lymphatic capillaries from the intercellular spaces. It drains excess fluid from the extra cellular space back into the blood. Lymph carries digested as well as absorbed fat from the intestine.
48. The pathway indicating the flow of blood within the human heart. The right half of the heart always has deoxygenated blood while the left half has only oxygenated blood.
49. As the blood flows, a part of it gets filtered out of the capillary walls. This forms the lymph.
Lymph — carries digested fats.
— returns proteins and other fluids for circulation.
— lymphocytes contribute towards immunity.
50. The waste products in animals include carbon dioxide, nitrogenous compounds like ammonia, urea and uric acid, bile pigments from the breakdown of haemoglobin, excess salts and vitamins.
51. The most poisonous of all waste by-products of metabolism is ammonia.
52. The kidneys extract urea from the blood and excrete it from the body as part of a liquid called urine.
53. Excretion of waste products is very simple and much less in plants as compared to animals.
54. Excretory system of human, mainly consists of a pair of kidneys, ureters, urinary bladder, urethra, etc.
55. Excretory organs in animals are lungs, skin, kidneys and liver.
56. An artificial kidney machine works on the principle of dialysis.
57. Dialysis is a process of separating small molecules from larger ones using a semipermeable membrane.
58. Bowman’s capsule is a cup shaped body enclosing glomerulus part of a nephron.
59. Glomerulus is a network of finely divided blood capillaries enclosed in Bowman’s capsule.
60. Structural and functional unit of kidney is nephron. The parts of a nephron are (a) a tuft of capillaries called ‘glomerulus’, (b) Bowman’s capsule, (c) extended tubular system and a collecting duct.
61. Carbon dioxide produced during respiration is carried by (i) haemoglobin in the blood and, (ii) water in which it gets dissolved.
62. The kidneys perform two major functions—(i) help to remove toxic wastes like urea from the blood and thereby clean the blood, (ii) control water balance and levels of mineral salts in the body.
63. The filtration of blood for the removal of wastes can be done by an artificial kidney, in cases of renal failure. Such a system is called ‘Dialysis’.
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Importance of Quick Revision Notes
Quick revision for class 10 science is essential as it helps students consolidate their understanding of the subject and prepare for exams efficiently. Here are some reasons why quick revision is important for class 10 science:
- Helps to remember important concepts: Science is a subject that requires students to understand and remember various scientific concepts, formulas, and terminologies. Quick revision notes can help students remember these key concepts and ideas, making it easier for them to recall the information during exams.
- Saves time: Quick revision notes can help students save time when preparing for exams. Rather than going through their entire textbook, students can quickly review the most important information and refresh their memory.
- Improves exam performance: By reviewing quick revision notes regularly, students can improve their understanding of the subject and perform better in exams. Quick revision notes can also help students identify areas where they need more practice and focus their attention on those topics.
- Boosts confidence: By having a concise summary of the key concepts and ideas, students can feel more confident and prepared for their exams. Quick revision notes can help students feel more in control of their revision and reduce their stress and anxiety.
- Helps to cover all topics: Quick revision notes can help students ensure that they have covered all the important topics in their syllabus. By regularly reviewing their notes, students can identify any areas where they need to revise and focus their attention on those topics.
In conclusion, quick revision is an important aspect of preparing for class 10 science exams. By creating and regularly reviewing concise revision notes, students can improve their understanding of the subject, save time, and perform better in their exams.
How to Make Best Quick Revision Notes?
Here are some tips on how to make effective quick revision notes:
- Skim the material: Before you start making revision notes, skim through the material to get an overview of the content. Identify the main themes, concepts, and ideas that you need to remember.
- Use bullet points: Break down the information into small, digestible pieces by using bullet points. This will help you focus on the most important points and make your notes easier to read and review.
- Keep it concise: Avoid lengthy sentences and paragraphs. Use short and simple sentences to summarize the key points.
- Use visuals: Include diagrams, tables, flowcharts, and other visual aids to help you remember the information. Visuals can help you understand complex concepts and remember them more easily.
- Use abbreviations and symbols: Use abbreviations and symbols to save time and space. For example, use “&” instead of “and,” or “e.g.” instead of “for example.”
- Color-code your notes: Use different colors to highlight key points and make your notes more visually appealing. This can help you remember information more easily and make your notes more engaging to review.
- Review your notes regularly: Review your notes frequently to reinforce your memory and ensure that you retain the information. Consider reviewing them daily or weekly to help you prepare for exams and tests.
Remember, the key to making effective quick revision notes is to focus on the most important information and make it as concise and memorable as possible.
Features of our quick revision notes for class 10 science
Here are some features of our quick revision notes for Class 10 Science:
- Concise: Our revision notes are concise, highlighting only the most important points and concepts that are likely to be tested in exams.
- Easy to read: The notes are written in simple language, making them easy to read and understand for all students.
- Well-organized: Our revision notes are well-organized, following a logical structure that covers all the key topics in Class 10 Science.
- Visual aids: We use visual aids like diagrams, flowcharts, and tables to explain complex concepts and make the notes more engaging.
- Relevant examples: We use relevant examples to illustrate concepts and provide context, making it easier for students to understand and remember.
- Comprehensive: Our revision notes cover all the topics in the CBSE Class 10 Science syllabus, ensuring that students have a comprehensive understanding of the subject.
- Regular updates: Our revision notes are regularly updated to reflect any changes in the syllabus or exam pattern, ensuring that students have access to the latest and most accurate information.
- Exam-focused: Our revision notes are exam-focused, covering only the information that is most likely to be tested in exams.
- Time-saving: Our revision notes are designed to save time by providing a quick summary of the key concepts and topics in Class 10 Science, allowing students to review the material quickly and efficiently.
Overall, our quick revision notes for Class 10 Science are designed to help students prepare for their exams more effectively by providing a concise, well-organized, and comprehensive summary of the key concepts and topics in the subject.
Topics Covered in CBSE Class 10 Science
The CBSE (Central Board of Secondary Education) Class 10 Science syllabus covers a wide range of topics in physics, chemistry, and biology. Here are the major topics covered in CBSE Class 10 Science with some details:
- Chemical reactions and equations: This chapter deals with types of chemical reactions and balancing of chemical equations.
- Acids, bases, and salts: This chapter covers the properties and uses of acids, bases, and salts, as well as their reactions with metals and non-metals.
- Metals and non-metals: This chapter deals with the physical and chemical properties of metals and non-metals, and their uses in various applications.
- Carbon and its compounds: This chapter covers the properties of carbon and its compounds, including hydrocarbons, alcohols, and carboxylic acids.
- Periodic classification of elements: This chapter covers the periodic table of elements, the trends in the properties of elements, and the classification of elements based on their properties.
- Life processes: This chapter deals with the various life processes of living organisms, including nutrition, respiration, transportation, and excretion.
- Control and coordination: This chapter covers the nervous and endocrine systems in humans and their role in the control and coordination of various physiological processes.
- Heredity and evolution: This chapter deals with the principles of inheritance, variation, and evolution in living organisms.
- Light reflection and refraction: This chapter covers the properties of light, reflection and refraction of light, and the formation of images by mirrors and lenses.
- Human eye and colorful world: This chapter covers the structure and function of the human eye, the correction of vision defects, and the dispersion of light.
- Electricity: This chapter deals with the concepts of electric current, voltage, resistance, and power, as well as the applications of electricity in daily life.
- Magnetic effects of electric current: This chapter covers the properties of magnets, the magnetic field, and the magnetic effects of electric current.
- Sources of energy: This chapter deals with the various sources of energy, including conventional and non-conventional sources, and their uses in daily life.
These are the major topics covered in CBSE Class 10 Science. Students are expected to have a thorough understanding of these topics to excel in their exams.
Quick Revision Notes are available for all the above topics.
Hope this helps!