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holiday homework class 8- science

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Good Morning boys, Thank you for logging in. You are wonderful!😊 This blog has instructions for your Holiday HW. Read it carefully. CLASS 8 SCIENCE HOLIDAY HOMEWORK             All the worksheets have been uploaded on REDOX. WEEK 1 Cell: Structure and Functions ·          Read the chapter thoroughly. ·          Practice Questions from the book. ·          Draw and Practice all the diagrams discussed in the class. ·          Solve WORKSHEET of the chapter  Cell  in the notebook. CLASS 8 SCIENCE   LESSON 8 -CELL -STRUCTURE AND FUNCTIONS                       LEVEL  - A 1.     ANSWER IN ONE WORD ONLY : The structural and functional unit of life.    …………………………   Organisms in which all functions of the body are carried by a single cell.   …………………………..      Organism in which various functions in the body are divided among different groups of cells.  …………………………… The outer boundary of the cell.    ……………………………………..   The control center of the
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MICROORGANISMS-POST -7

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April 20, 2020 What you see above is the  nitrogen cycle . You have been introduced to the water cycle in the previous classes.  What goes around comes around!!! Good morning and welcome to another interesting day in the world of micro bes. We know that the atmosphere is made up of 78% nitrogen. However, we are unable to obtain this nitrogen that is required for our growth directly from the atmosphere. In this video we will see how plants obtain nitrogen from the atmosphere and thereafter how do we obtain this nutrition from plants. https://www.youtube.com/watch?v=tCrgTV20BD4&t=22s I hope you have understood how nitrogen is fixed by  natural processes Last year you did come across  symbiotic bacteria .  They live in the small swellings found on the roots of leguminous plants like groundnut. These bacteria convert atmospheric nitrogen into nitrates which are absorbed by the bacteria and provided to the plants for their growth. When plants and animal
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microorganisms- question-answers -2

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GOOD MORNING BOYS
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MICROORGANISMS- POST-6

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GOOD MORNING TO ALL OF YOU                                                                                                                                     LET'S BEGIN TODAY WITH A SHORT  RECAP https://www.youtube.com/watch?v=kYf_Sl8W3qY     , Today we are going to talk about  FOOD PRESERVATION We preserve food to:      decrease the wastage of food increase the shelf-life of perishable (that gets spoilt easily) food materials.  to make food available to people in distant and remote places. to ensure availability of out of season food materials. In our houses we have seen common methods of food preservation like: boiling of milk salting of fish using oil and vinegar for making pickles to make it last for a long period of time. using the freezer and refrigerator to store food to last longer drying of certain foodstuffs to be used at a later date In all the above methods, we can observe that  strong concentrations of salt, sugar, low and high te
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