class 7 science chapter 2 extra questions

Question 3. (a) kills the harmful bacteria that may enter along with the food, Question 5. Answer: (a) Yes, the difference has been observed in the number of molars. Answer: [NCERT Examplar] (a) The largest gland in our body. Answer: (a) swallowed and undigested (c) She is sincere, curious and has interest in science. (c) gravitational pull They have very thin walls to pass digested nutrients through diffusion. (c) tongue, absorption, taste, swallow Nutrition in Animals Class 7 Extra Questions Science Chapter 2 Nutrition in Animals Class 7 Science Extra Questions Very Short Answer Type. Give reason. However, in “Amoeba” the finger like projections are called “pseudopodia” that helps it to catch food particles and to move. 2. Which solution will be basic in nature? Question 2. (a) Diarrhoea. ……. Read the statement and choose a word for it: “Organisms which take food hurriedly and store it, in a part of the stomach. [NCERT Exemplar; HOTS] Children have 28 teeth in their mouth.There are only four molars in each jaw. (d) liver Soil. Answer: Small intestine in herbivores is longer than in carnivores. Question 1. Choose the odd one out from each group and give reasons. Answer: Source of energy for living being is food. (d) All of these It creates an acidic environment which facilitates the action. (a) Assimilation In this article, you will get access to extra questions from Class 7 Science chapters like heat, motion and time, winds, weather and respiration in organisms, These questions are based on NCERT Science Exam question papers of Class 7. Cellulose rich food substances are good source of roughage in human beings. (a) water gets absorbed from undigested food CBSE Science Class 7 Chapter Wise Solved Q&A . (ii) They have a network of thin and small blood vessels close to the surface. Question 8. The swallowed food moves downwards in the alimentary canal because of [NCERT Exemplar] (a) movement only It is a digestive organ. The absorption of nutrients or food components in its simpler form takes place in Four kinds of teeth present in human are ……, …….., …….. and …….. His elder brother Shubham who was sitting near by him gave him a glass of water and suggested not to eat too fast in a hurry. Answer: Question 14. Question 1. There are four types of teeth found in human being. The gall bladder releases the bile juice into the small intestine whenever food reaches there. Bile juice breaks down big fat droplets into smaller droplets. Science Class 7 Important Questions are very helpful to score high marks in board exams. (b) (ii), (iii) and (iv) Can you tell which kind of food items would they be and why? Question 1. Nutrition in Animals Class 7 Extra Questions and Answers Science Chapter 2 PDF are solved by experts and will guide students in the right direction. This is because the bile juice stored in the gall bladder helps in digestion of fats. Answer: (b) Why is digestion of fats difficult as compared to that of other nutrients? Salivary gland is present in the buccal cavity and it secretes saliva. The inner lining of stomach secretes mucous hydrochloric acid and digestive juices. Diarrhoea can be treated by only giving water to the patient. Time – 05 Minutes. Question 1. Draw the labelled diagram of tongue showing different region for taste buds. (b) the flow of water taken with the food Register online for Science tuition on Vedantu.com to score more marks in your examination. Give reasons for your Answer: [NCERT Exemplar; HOTS] Answer: Suddenly, Boojho started coughing violently. Hence, your answer will be option [D]. (b) Digestion of fats is difficult as compared to that of other nutrients because of insolubility of fat in water. food vacuole, Question 5. After surgical removal of gall bladder, ‘A’ would face problems in digestion of fat and fatty substances when consumed in bulk. Ruminants have four chambers of stomach. Canines are used for grinding of food. The maid told that his son was passing watery stools frequently that’s why she didn’t come. They grow during infancy, i.e. Chapter 3: Fibre and Fabric. True (c) digests starch into simpler sugars How can you prepare ORS at home? The swallowed food moves downwards in the alimentary canal. Extra Questions for Class 7 Science Chapter 2 Nutrition in Animals with Answers Solutions. At the time they take in food, the food is moistend and is sent for cellulose digestion and softening in rumen. Level : Class – 7. (d) oesophagus, small intestine, large intestine, rectum [NCERT Exemplar] (e) Transport of digested and soluble food from the intestine to blood vessels. Check the below NCERT MCQ Questions for Class 7 Science Chapter 3 Fibre to Fabric with Answers Pdf free download. It is because the cellulose digesting bacteria are not present in the body of human beings due to which human beings cannot digest cellulose (present in plant foods). Both of them poured 1-2 drops of iodine solution into the test tube and observed the colour change. Ingestion, Question 2. What is the total number of teeth in an adult human? What will happen if mucus is not secreted by the gastric glands? (c) glycerol Question 1. Answer: What colour change would they have observed? The digested food is absorbed at illum of small intestine by finger like structures called villi. (d) properly chewed and completely digested Question 14. Explain. NCERT Solutions for Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 11 Physical Education, NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 12 Physical Education, CBSE Sample Papers for Class 10 Session 2020-2021, CBSE Sample Papers for Class 12 Session 2020-2021, Useful Tips To Score Good Marks On Programming Assignments, Top Essay Writing Service with Tons of Pros. List the preventive measures that one should adopt for avoiding tooth decay. Here, all the statements are correct. [NCERT Examplar], Answers: (i) Boiled and mashed potato (ii) Glucose solution (iii) A slice of bread (iv) Mustard oil . Question 23. Students can use these questions for the preparation for class tests or examination for new academic session 2020-21. What will happen if food particles enter the windpipe? (d) The grinding teeth present only in adult as D 7. (d) lining of liver Where is the digested food absorbed in Human being? Suddenly he got hiccups. Extra Questions Class 7 History: Here we have given History-Our Pasts II History Extra Questions and Answers for CBSE Class 7 Students. (a) Which organ secretes the bile juice? (a) fatty acids Dentine protects which part of human teeth? These vacuoles are of two types, i.e. All the questions based on elements, compounds and mixtures are taken for the description of the chapter 2 of class ix science. Alimentary canal is different from digestive system. trapped food particles. Explain how assimilation is different from absorption. Much use of cold drink should also be avoided.”, Question 2. Answer: Answers: Briefly explain, why animals like cow cannot chew their food properly at the time they take it in. Bile is produced in (a) Gall bladder (b) Blood (c) Liver Answer: The food is not chewed completely. Additional breakdown of starch occurs in the small intestine. Question 1. Question 1. Answer: Oral rehydration solution is the solution of sugar and salt in a particular ratio in the clean water. Register online for Science tuition on Vedantu.com to score more marks in your examination. Answer: Explain. Answer: Date – January 12, 2021. (c) absorb the digested food (d) bile juice is produced [NCERT Exemplar] Parasites are Autotrophs. (a) blood vessels of small intestine wall, Question 10. (c) pancreas (iv) They are finger-like projections. Answer: These bacteria breakdown the sugars present from the leftover food and release acids. Acids Bases and Salts Extra Questions Very Short Answer Type. Discuss the position and number of molars in buccal cavity. (b) Name the solution of sugar and salt in water. Actually, they quickly swallow the grass and store it, in a part of the stomach, called “rumen”. The acids gradually damage the tooth. The digestion of food starts in mouth and the digestion is completed in small intestine and the rest options are correct. (e) Does bile juice digest fat completely? Chapter 6: Physical and Chemical Changes. Briefly describe the mechanism of producing hiccups while we take food in hurry. (iii) We should use dental floss which is a special strong thread. Question 8. They are given some parts of the digestive system, choose the odd one. Answer: Jaya’s mother who was listening the discussion came to them and told Rani not to come for coming 3-4 days. Ruminants such as cows and buffaloes swallow their food hurriedly and then sit restfully and chew their food. (d) Ingestion Pancreas secretes pancreatic juices which act on carbohydrate, fats and proteins and change them into simpler compounds. food vacuole and contractile vacuole. These glands are salivary glands, liver and pancreas. (b) Oral Rehydration Solution (ORS). Answer: When Amoeba senses its food, it pushes out pseudopodia around the food particle and engulfs it. Permanent, Question 6. (b) protects the stomach lining from harmful substances (a) Name the term used to describe the condition in which a person passes out watery stools. True 5. However, if we do not clean our teeth and mouth after eating, many harmful bacteria also begin to live and grow in it. Question 3. [HOTS] The two pseudopodia join around the food particle and trap the food particle with a little water forming vacuole around food, thus the food gets trapped. Swallowing → partial digestion (cud) → cud brought back to mouth → chewing of cud → other compartments of stomach → small intestine → complete digestion. Attempt at least 5 tests to test your exam preparation based on Class 7 Science Chapter 2. (d) cellulose breaks down into smaller components which are egested as roughage This process is called rumination. (c) tongue Motion and Time Class 7 MCQs Questions with Answers. But later the partially digested food (cud) returns to the mouth in small lumps and the animal chews it. 6. (b) large intestine wall Which of the following statements is or are incorrect, about “human digestive system”? Question 22. NCERT Solutions for Class 7 Science PDF free download, NCERT Solutions for Class 7 Science Chapter 2 Nutrition in Animals, to Study online or download free in PDF form. The process by which absorbed food is taken by body cells and is used for energy, growth and repair is called assimilation. Question 5. Question 1. Read the following statement with reference to the “Villi” of small intestine and choose the correct option. Click “Next” to start the quiz 6. (c) rumen Read the following statements with reference to the villi of small intestine. Question 7. Answer: Question 29. (c) (iii) and (iv) Large intestine absorbs ….. and …… from undigested food. Answer: Is there any role of liver in digestion of fats? Question 8. (d) Digestion of fat is completed in small intestine. At home the ORS can be prepared by dissolving a teaspoonful of sugar and pinch of salt in a glass of clean water. (d) Taking food into the body. (a) human beings do not have cellulose: digesting enzymes, Question 13. Read the following passage carefully and answer the questions that follow it. You could identify drink A as lime juice and B as bitter gourd juice. Note your observation. Yes, liver produces bile which has bile salts. (d) the contraction of muscles in the wall of foodpipe ORS makes up the loss of water and salts in the body and sugar provides energy which helps in the recovery of disease. Jaya returned from school and found that grandmother was scolding her maid, Rani as she did not come yesterday. However, the finger-like outgrowths of human intestine helps to [NCERT Exemplar] Digestive juices present inside the vacuole, acts on the food and break it into simpler substances. MCQ Questions for Class 7 Science with Answers are prepared as per the Latest Exam Pattern. Question 2. Answer: The three digestive glands are. These questions will help all class 7 students including students from schools like Kendriya Vidyalaya (KVs), DAV, DPS, etc. Question 24. Answer: (c) sleep (a) Enamel Class 7 Science Chapter 2 MCQ for Exams. Name the parts of the alimentary canal where Chapter Wise CBSE Science Class 7 Solved Question and Answer Based On NCERT. You were blindfolded and asked to identify the drinks provided in two different glasses. The cellulose digesting bacteria are not present in the body of human being, therefore human beings and other carnivore cannot digest cellulose present in plant food items. Question 1. Refer to figure on page 17. The cellulose of the food is digested here by the action of certain bacteria which are not present in humans. Here in this Page Class VI Students can Learn Extra Questions & Answer 2nd Chapter Science fully Inside. Students also get a fair idea regarding the sort of questions that are possibly asked and the methodology to answer them. What is assimilation? If mucus is not released, it will lead to erosion of inner lining of stomach leading to acidity and ulcers. True Question 5. Meritnation.com gives its users access to a profuse supply of General Science (Solutions) questions and their solutions. Some parts of above figure and name them of that of other nutrients need a longer time intestine... Be killed and mashed potato ( ii ) Glucose solution ( ORS ) are 24 sets of tests! Did not come yesterday can be prepared by dissolving a teaspoonful of sugar and pinch of salt in water inside! 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