DAV SCIENCE CLASS V

COMPONENTS OF FOOD 1. The essential components of our food are called ___________ . (a) fats (b) nutrients (c) minerals (d) roughage 2. Which of the following is a protective food? (a) milk (b) oils & fats (c) fruits (d) cereals 3. The food component present in sugar is (a) fats (b) proteins (c) vitamins (d) carbohydrates 4. The percentage of water in the human body is (a) 65 (b) 70 (c) 40 (d) 80 4. Foods like pizza, burger and noodles are rich in (a) carbohydrates (b) protiens (c) vitamins (d) minerals 6. _________ provide more than double the energy provided by carbohydrates or protiens in human body. (a) vitamins (b) fats (c) minerals (d) starch 5. The component of food which help our body to fight against infections is (a) protiens (b) fats (c) carbohydrates (d) starch 6. ___________ is essential for forming haemoglobin in the blood. (a) calcium (b) iron (c) phosphorous (d) magnesium 7. The disease caused by the deficiency of...

SPOILAGE AND WASTAGE OF FOOD AND FOOD PRESERVATION QD.Answer the following questions in brief. 1.State two factors that contribute to the fast growth of micro-organisms. Ans: Two factors that contribute to the fast growth of micro-organisms are moisture and temperature. 2.Whta is likely to happen to curd if it is not stored in the refrigerator? Ans:if curd is not stored in refrigerator ,it will get spoiled  quickly due to growth of micro-organisms. 3.What do you understand by food preservation? Ans:Food preservation is the process of treating and handling  of food to stop or slow down ,the spoilage caused by micro-organisms or enzymes. 4. How can we protect our food from insects, worms and rats? Ans: To protect our food items insects, worms and rats we should keep the kitchen, cupboard, shelves and container clean and dry. 5.Why does food stay fresh for a longer time  when stored in a refrigerator? Ans: Refrigerator has the facility to lower the t...

ANIMALS –OUR FRIENDS D.Answer the following questions. 1.      Name five wild animals. Ans: Name of five wild animals are tiger, lion, deer, bear and  wolf. 2.      Give the meaning of the term food chain. Ans: The relationship of eating and being eaten is called food chain. 3.      How are human beings destroying the natural surroundings of wild animals? Ans: Human beings are destroying the natural surroundings of wild animals by cutting down trees. 4.      Name the animals that can become man eaters. Ans: Tiger ,Lion or Leopard can be man eater. 5.      Which act has been passed by the Indian government to protect wild life? Ans: The wildlife (protection) Act 1972 has been passed by the Indian government to protect wildlife. E. Answer the following questions. 1. State any five ways in which animals are useful to us. Ans: Animals are useful to us in the...

PLANT D1.The  pigment present in green leaves of a plant is chlorophyll. D2.Some plant feed on insects because, they grow in such a soil which lack nitrogen .To fulfill nitrogen requirement they kill insects and feed on them . D3.The  two methods of reproduction  in plants are- i)Reproduction through seeds (sexual reproduction) ii)Reproduction through vegetative part(asexual reproduction) D4.The conditions required for the proper germination of seeds are i)                     proper amount of water    ii)     Sufficient air iii) Favorable temperature       D5.Two plants that reproduces through stem cutting are –i) rose  ii)china Rose E1.All seeds do not germinate to form new plant because germination of seed is a very complex process .It needs proper amount of water, air & favorable temper...

Forest D1.Name any four products that are obtained from forests. Ans:Four products that are obtained from forest are honey, lac, medicine &timber. D2.Why do some men cut trees? Ans: Some men cut trees to make houses, industries, for construction and for special products. D3.What is the Gir National Park famous for? Ans:Gir National Park is famous for Asiatic lion. D4.Name two migratory birds that visit Bharatpur Bird sanctuary. Ans:Two migratory birds that visit Bharatpur Bird Sanctuary are Siberian Crane & Painted stork. D5.What is the average temperature and annual rainfall for a forest  to develop? Ans:A forest  to develop needs an average temperature of 10 o Celsius and a minimum 200 mm rainfall. E1. List four harmful effects of deforestation. Ans: Four harmful effects of deforestation are:- i)                   decrease in rainfall ii) Increase in the...

My Body D1.Ans:The process by which living organisms take in oxygen and give out carbon  dioxide is called breathing. D2.The fore-limbs are connected to the spine by the shoulder girdles and collar bone. D3.The rib cage protects the delicate organ heart and lungs. D4.The main parts of the skeletal system are: The skull,   the rib cage, the backbone and the limbs. D5.the inner ear sends the signal of sound waves to the brain and helps in hearing .It also maintains the balance of our body. D6.Snakes feels different kinds of vibration on the earth through its skin. Tongue helps to detect the presence of an enemy a danger or a prey. E1.Bones have joints which allow movement of body part in different ways and different direction. E2.Our back bone is made up of many small vertebrae instead of having one straight long bone because these bones give flexibility to our backbone which help us to move in different ways. E3/Bone marrow is known as the factory for...

FOOD AND HEALTH D1.The two main categories of diseases are communicable and non-communicable. D2.The symptoms are extreme weakness and paralysis of body parts. D3.The diseases that  spread through mosquitoes  are  malaria and dengue. D4.The girl who find difficult to see in dim light and has dry and scaly skin is suffering from vitamin A deficiency diseases. D5.Water should not allow to stagnant around our homes because Stagnant water is suitable place of breeding for mosquitoes. E1.Calcium are phosphorous are building bulk of bone and teeth. Deficiency of  calcium and phosphorous in our body  make our teeth weak ,loss of shines and whiteness of teeth. It also make our bone weak soft and fragile. E2.The deficiency diseases can be prevented by adopting the following measures: Ø   One should take a balanced diet containing all types of nutrients. Ø   One must follow good food practices and habits. Ø   Children must be given ade...

CLASS-V            WORKSHEET-4          SUB-EVS TOPIC:-Spoilage &Wastage of Food and food preservation Name......................................................................sec.......................Roll no............... 1. Match the following. Food items                              Methods of preservation a) Milk                                               wrap it in a damp cloth. b) Cooked rice                   ...