CHAPTER 7: CONTROL AND COORDINATION Living organisms respond to various stimuli like heat, light, cold, touch, pressure etc. Example: Withdrawal of hand on touching a hot object. Control and Coordination in Animals It is brought about in all animals with the help of two main systems (a) Nervous System (b) Endocrine System Nervous System: Consists…
Read MoreLife processes All the processes such as respiration, nutrition, circulation, excretion etc. that are necessary for the survival of the living organisms are known as life processes. Nutrition Nutrition is a process of intake of nutrients (like carbohydrates, fats, proteins, minerals, vitamins and water) by an organism as well as the utilisation of these nutrients…
Read MoreCHEMICAL REACTIONS AND EQUATIONS Chemical reaction: The transformation of chemical substance into another chemical substance is known as Chemical reaction. For example: rusting of iron, burning of coal, burning of candle digestion of food etc. In chemical reaction the new substance is formed which is completely different in properties from the original substance. Experiment…
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