Each and everyone wants to be smart in their life but not becomes successfull as their wishes except a few because there is vast differences between the reality and expectation.He who understood the meaning of reality and expectation becomes successful in his/her life.
AJAY HAZRA
Important question answer from the topic Nervous system A. Which one is correct ? 1. Our nervous system consists of the brain, the spinal cord and the a. blood vessels b. nerves c. lungs Ans: c) lungs 2. Our brain needs a constant supply of a. oxygen b. nitrogen c. lungs Ans: a) oxygen 3. When we happen to touch a hot object, the sensory nerve immediately passes a message to the a. brain b. spinal cord c. hands Ans: a) brain 4. ______is the largest organ in our body. a. skin b. nose C. ears Ans: a) skin B. Fill in the blanks : 1. The brain is control centre of the body . 2. The brain has three parts . 3. There are nerve endings on the upper part of the nose . 4. The coloured circle in the eye is the iris . C. Write 'T' for true or 'F' for false : 1. The cerebellum coordinates the actions of the muscles. Ans: True 2. The actions controlled by the spinal cord are called reflex actions. Ans: True 3. The ears enable us to keep our balance. Ans: True 4. The pupil i
1. What is the primary source of energy which causes changes in the weather ? Ans: Sun is the primary source of energy which causes changes in weather . 2. Name any two activities of our daily life which are planned according to the weather on a day. Ans: We wear light coloured clothes during summer days and we prefer to wear dark colour clothes in winter . 3. What term is used to denote the amount of water vapour (or moisture) in air ? Ans: The term humidity is used to denote the amount of water vapour (or moisture) in air . 4. Name the instrument used to measure the rainfall at a place. Ans: The instrument used to measure the rainfall at a place is rain gauge . 5. Name the unit in which rainfall is measured. Ans: Millimeters (mm) is the unit in which rainfall is measured . 6. Which of two changes frequently weather or climate ? Ans: Weather changes frequently . 7. Name one state (or region) each in India having the following (a) Very hot and wet Kerala (b) Hot and dry
A. Which one is correct ? 1. Yellow substance on teeth is called- a. dentine b. tar tar c. plaque Ans: b 2. We must floss your teeth a. every month b. everyday c. every week Ans: b 3. Sweets and chocolates ____ our teeth . a. spoil b. perfect c. clean Ans: a 4. Tooth decay causes a. toothache b. holes in teeth c. both Ans: c 5. Molars are also called a. tearing teeth b. cutting teeth c. grinding teeth Ans: c 6. The centre of each tooth is called a. dentine b. pulp c. crown Ans: b B. Fill in the blanks : 1. We must brush your teeth at least twice a day . 2. Milk has calcium that makes our teeth strong. 3. We must wash or floss your teeth everyday. 4. Microbes are very small living things. 5. Microbes that cause diseases are called germs . C. Write T' for true or 'F' for false statements : 1. We all are born without teeth. True 2. Every adult has a set of 36 teeth. False 3. There are three kinds of permanent teeth. False 4. We should avoid too many sweets and
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