My Body and Digestion
Science Four
Questions - Long Answer Type
Answer the following QUESTIONS:
Question: 1- Write the name the organ through which food enters into the stomach.
Answer: Food enters into the stomach through the food pipe.
Question: 2- Write the name of the parts of the digestive system.
Answer: Mouth, food pipe, stomach, small intestine, large intestine, rectum are the parts of digestive system.
Question: 3- What is digestion?
Answer: Breaking up of the complex food materials into the simpler form is called digestion.
Question: 4- How many sets of teeth are formed during one’s life time?
Answer: There are two sets of teeth are formed during one’s life time.
Question: 5- What are milk teeth?
Answer: Milk teeth are temporary teeth. These are appear first after about one and two years of birth.
Question: 6- How many milk teeth one has?
Answer: There are 20 milk teeth one has.
Question: 7- What are permanent teeth?
Answer – Teeth appear after falling of milk teeth, are called permanent teeth. Permanent teeth appear between the ages of six to twelve. These are 32 in number.
Question: 8- How many permanent teeth one has?
Answer: There are 32 permanent teeth one has.
Question: 9- How many pairs of salivary glands are in the mouth?
Answer: There are three pairs of salivary glands present in the mouth.
Question: 10- What is the function of broad and grooved teeth?
Answer: Broad and grooved teeth help in chewing and grinding of the food.
Question: 11- What happens to food when it enters the stomach?
Answer: When food enters in the stomach, its walls secret digestive juice and acid. Acid kills germs and bacteria and digestive juice digest the food.
Question: 12- Why washing of vegetables and fruits before eating is important for us?
Answer – Because unwashed vegetables and fruits can carry germs of diseases which can cause for diarrhoea, vomiting and other diseases.
Question: 13- List the precautions that should be taken at the time of eating food.
Answer - We should wash our hand before and after eating.
We should eat balance diets.
We should chew food properly before swallowing.
We should drink plenty of water.
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