After few hours, the dough had risen. Answer: Give reason for your answer. Respiration in Organisms Class 7 Extra Questions Short Answer Type. Answer: Do they possess lungs? Answer: Answer: (d) blow holes (d) stomach Anaerobic respiration. (a) down and inwards [HOTS] Describe each one. When breakdown of glucose occurs with the use of oxygen it is called aerobic respiration. The gas, carbon dioxide is in higher percentage or amount, when we exhale or breathe out. The leaves of plants possess tiny pores on their surface which is called as stomata. 3. To produce more energy to meet the oxygen requirement of muscles, muscle cells perform anaerobic respiration for a short duration. Question 9. The lungs take the oxygen rich air through the nostrils from where the oxygen is absorbed by the blood and carried throughout the body. Answer: (d) Snake, tadpole, crow, goat [NCERT Exemplar] In the cell, the food (glucose) is broken down into carbon dioxide and water using oxygen. The number of times a person breathes in a minute is termed as breathing rate. Question 18. Aerobic respiration takes place in mitochondria. Question 4. (a) Animals that can breathe only through skin. Question 2. It harms lungs. (e) Animals that can breathe through spiracles and tracheae are grasshopper, cockroaches, ants, housefly and mosquito. Explain the role of lungs in frogs. Answer: Answer: Question 4. Answer: (a)-(x) Plants are unable to use CO2 during night and produces CO2 and takes O2 during respiration. Answer: Question 4. It lies between pharynx and trachea. Lungs are very ………….. organ. Answer: Therefore, fishes will have difficulty in breathing in the absence of oxygen and will die. 2. floor What is a breath? Question 6. (b) Human being (a) walking (g)-(iv) Question 9. Tick the correct answer: (a) In cockroaches, air enters the body through. Question 17. 8. Name the gas. This is when you will learn the difference between breathing and respiration. open our mouth wide to take a long and deep breathe, of air), because our breathing rate slows down and body do not receives sufficient oxygen. Answer: Main organ of human respiratory system is Question 5. The partial breakdown of glucose produces lactic acid. It involves two major steps: (b) The number of times a person breathes, in a minute is called as breathing rate. (d) What would have happened if the dough was kept in the refrigerator, soon after it was prepared? (d) Dolphin What is produced during this process? (a) wine and beer industry It helps in complete breakdown of lactic acid into carbon dioxide and water. (a) Fish Question 6. (b) take in oxygen dissolved in water Reproduction in Plants Class 7 Science Extra Questions Long Answer Type Questions. What is their use? Answer: The process of fermentation is based on which principle? (b) In the figure label the arrows and indicate the direction of. Q1. [HOTSl [HOTS] (a) glucose, Question 10. What is its scientific name? Answer: Why do you get muscle cramps after heavy exercise? On an average, an adult human being at rest breathes in and out 15-18 times in a minute. (d) pharynx 4. The oxygen rich air enters through the skin. Answer: (b)-(vii) Question 5. Her mother took her to hospital where the doctor examined and told her not to push herself more than necessary. (b) go to sleep Question 4. (a) During sneezing, what are the precautionary steps to be followed? Complete Short & Long Question Answers - Respiration in Organisms Class 7 Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check out Class 7 lecture & lessons summary in the same course for Class 7 … Answer: What is the breathing rate of an average person at rest? [NCERT Exemplar] Frogs can breathe through their skin as well as lungs. Faster breathing supplies more oxygen to the body cell for producing more energy, required for heavy exercises. Answer: (a) Exhalation process of respiration is being tested in the activity. NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. During heavy exercise, fast running, cycling, walking for many hours or heavy weight lifting, the demand for energy is high. Respiration ,Respiration in Organisms - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 7 on TopperLearning. It is the process of breakdown of food in the presence of oxygen. Gases can easily pass through them. Question 2. Answer: Unwanted particles like smoke, dust, pollen, etc., are called ………….. . Taking in of air rich in O2 inside the body is called ………….. . Question 1. Answer: Answer: The glucose is not completely broken down into carbon dioxide and water. (b) Frog, Question 11. Certain small pores are present on the surface of plant through which gaseous exchange occurs. Answer: (d) sleeping, Question 7. Question 14. (a) Cockroach, grasshopper, snail, ant (b) Lizard, cow, earthworm, snake (c) Crocodile, whale, dolphin, fish (a) Respiratory process occurs in two phases, what are those two major steps of respiration? Answer: Aerobic respiration. True Blow holes are surrounded by muscles that keep the holes closed when the whales or dolphins are under water and opens it when the animal is at the surface and needs to breathe. Question 1. Frogs respire through their moist skin as well as through a pair of lungs. They are called anaerobes. When frog enters into water, the skin of frog helps in respiration. Important Questions for Class 11 Biology Chapter 14 Respiration in Plants For gaseous exchange, plants do not have a specialized system as seen in animals. Smoking is considerd harmful due to certain effects. 2. What is exhalation? Values learned – We should not force ourselves exercise but not over burn yourself discipline. Question 3. The carbon dioxide from the blood is diffused back through the skin and lungs into the atmosphere. Explain. 1. Give reason for your answer. Answer: Yeasts are used in [Value Based Question] Answer: Question 3. This is because when a whale breathes air out of its blow hole it appears as a spray or misp, also called as spont. Answers: Show the composition of inhaled and exhaled air. Answer: During exhalation, ribs move down and inwards, while diaphragm moves up to its former position. [HOTS] 10. The lungs get filled with air. Oxygen present in air is essential for aerobic respiration. Answer the following questions in short: 1. When we work hard or perform physical activity (like running, swimming, cycling), we need mdre energy. These are found in the tadpoles besides fishes. Answer: (c) Both (a) and (b) Mark ‘T’ if the statement is true and ‘F’ if it is false: (i) During heavy exercise the breathing … (b) alveoli, Question 8. Fast breathing helps in supply of more oxygen to our cells. (c) Yes, the people should bot smoke in public areas as it can cause discomfort to others. Question 3. (c) anaerobically producing alcohol, Question 3. Give reasons. Similarly, carbon dioxide from the cells goes into the tracheal tubes and moves out through spiracles. Class 7 Science Solved Q&A Nutrition in Plants Nutrition in Animals Fibre to Fabric Heat Acids, Bases and Salts Physical and Chemical Changes Weather,Climate And Adaptation Wind Storms and Cyclones Soil Respiration in Organisms Transportation in Animals and Plants Reproduction in Plants Motion and Time Electric Current and its Effect Light Water A Precious Resource … What are anaerobes? Exercise questions 1-4 determines your understanding regarding respiration in Organisms and are short answer type questions. (b) Yeast, during anaerobic respiration also produces alcohol which results in the sour smell of dough. 9. Answer: (d) sleeping The exchange of gases in plants takes place through stomata. To fulfil the energy requirement, we breathe faster. (a) take in oxygen from air Answer: Question 4. Question.8 Given below is a square of letters in which are hidden different words related to respiration in organisms. Question 9. Answer: So, they do not have any, respiratory issue. Smoking also affects people around smokers as they also inhale air containing tobacco. 7. Question 16. When it stays at land is respire through lungs but when it goes into water, it respires through its moist skin. Total 9 Questions are in this NCERT Chapter Exercise, all are solved here. The various organs in the respiratory system of human are nostrils, nasal passage, nasal cavity, windpipe and lungs. Question 7. Respiration in Organisms Class 7 Extra Questions and Answers Science Chapter 10 PDF are solved by experts and will guide students in the right direction. 6. Answer: (b) The person gets oxygen though an instrument called ventilator which act as artificial lungs. Yeast is used in wine and beer industries because it respires ………….. is an essential phenomenon for the survival of living organisms. Giving out of air rich in carbon dioxide is called exhalation. [NCERT Exemplar]. Answer: Yeast upon incomplete breakdown of sugar or food produces CO2, alcohol and energy (in less amount). (b) Lizard, cow, earthworm, snake 5. Describe respiration in earthworm. (c) anaerobically producing alcohol Write the equation for breakdown of food in anaerobic respiration. during the process of photosynthesis. This cavity is surrounded by ribs on the sides. Observe the given figures carefully.and answer the following questions. Why do we often sneeze when we inhale a lot of dust-laden air? Answer: (a)-(iii) The cellular respiration process takes place in which cell organelle? But he observed that fishes in the aquarium died. These possess nostrils which are called blow holes. Question 11. Glucose is partially broken into lactic acid which causes body cramps. It takes longer time to release energy. (b) heart [Value Based Question] Answer: It is the average breathing rate of an adult human being. [NCERT Exemplar; HOTS] Identify them. An old man sitting next to the group asked them to stop smoking while sitting in the premise or move out. (a) The dough rises due to the release of carbon dioxide during anaerobic respiration by yeast cell. (d) Lactic acid only (c) absorb nutrients present in water Breathing rate of a person is not always constant. NCERT Exemplar Class 7 Science is very important resource for students preparing for VII Board Examination. (c) The body starts respiring anaerobically in the absence of sufficient oxygen. From the nasal cavity, the air reaches our lungs through the windpipe. Exercise-wise Discussion on NCERT Solutions for Class 7 Science Chapter 10- Respiration in Organisms. The percentage of oxygen and carbon dioxide inhaled and exhaled air: Question 1. Answer: Students can get how to tackle different questions easily by solving the Extra Questions for Class 7 Science Question bank on a regular basis. They respire anaerobically and during this process yield alcohol. In the experiment, where we exhale into lime water containing glass. (b) tracheae, Question 12. False, insects have spiracles on the sides of the body. Answer: Normally we take in air through our nostrils. Whenever we feel drowsy or sleepy, we start yawning. Extra Questions for Class 7 Science Chapter 10 Respiration in Organisms with Answers. 10. Frog breathe by their moist skin and through lungs also. (d) What values do we pick from this situation? Question 2. CBSE Class 7 Science Worksheet - Respiration in Organisms. Answer: Answers: Q39. from here. 7. (a) When sneezing, you should cover your nose so that the particles expelled by you would not be inhaled by others. Name the end products of anaerobic respiration in yeast. Yeast requires high temperature to grow, multiply and to respire. Answer: Question 3. respiration. Answer: Question 3. This oxygen is then carried to all the parts of fishes for respiration. It can be shown as follows: Lenticels. Answer: The values we understand are obedience, respect elders and healthy habits. 4. F-Nasal passage (b) The amount of CO2 will be the lowest in jar A. Internally, they have a network of air tubes called tracheae for gas exchange rich air rushes through spiracles into the tracheal tubes, diffuses into the body tissue, and reaches every cell of the body. During aerobic respiration, carbon dioxide and water are released along with a large amount of energy. No, different organisms respire at different rate because they all perform different activities at all times. Exchange of gases in the leaves takes place with the help of ………….. . Yeast is an organism respiring anaerobically. Give a brief description of our respiratory system with diagram. (a) Write any three hazards of smoking. On the basis of the presence or absence of oxygen, respiration is classified into two types: Why? Cellular respiration takes place in the cells of all organisms . Question 5. In the figure of a flower given below, label the parts whose functions are given below and give their names. She felt pain in her legs because of accumulation of lactic acid in the leg muscles. Question 1. (a) bronchi There are 15 questions in this test with each question having around four answer choices. Cell is the smallest structural and functional unit of the body. It can cause disease like asthma and heart diseases. Match the names of organisms in Column I with their organs of breathing given in Column II. Question 25. what happens to body and process of respiration? Question 12. Question 4. 7. Answer: A. A-Ribs Spiracles lead to an extensive network of tracheal system which is absent in the leaves. Pick the odd one out from each of the groups given below on the basis of respiratory organs. (d) None of these (a) moist and rough These organisms that carry out respiration in the absence of oxygen are called anaerobes. Question 2. Find detailed video answer solutions to NCERT Solutions Science , Class 7 Respiration in Organisms Exercise questions taught by expert teachers. Our nostrils has hair and mucous. Lactic acid is formed due to anaerobic respiration in the muscle cells after heavy exercise or running. Because of this, food gets broken down at a faster rate and thus make us feel hungry. CBSE VII MCQ Respiration in living Organism,Seven Science CBSE NCERT,Online study material, sample papers, test papers,video lessons in science, download science worksheets,NCERT Class VII Science, Printable worksheet respiration in organisms enotes 7th science ncert solutions Write the equation for breakdown of food in anaerobic respiration. The gills help the fish to [NCERT Exemplar] What happens and give reason for its occurrence? Name the respiratory organs in frogs. 3. These structures are responsible for the exchange of gases with the atmosphere. A film of moisture of appears on the surface of the mirror when we: (d) If the dough is kept in the refrigerators after it was prepared, then dough will neither raise nor become sour. C-Pharynx Question 8. Exhaled air has more percentage of CO2 than inhaled air. Diaphragm is known as the floor of chest cavity. Food can also be broken down, without using oxygen. Name the organisms which respire using anaerobic mode. What is yeast? The animal B is a fish. Paheli participated in a 400 m race competition held at her school and won the race. After a massage, she was relieved of the pain. (b) Movement of air, diaphragm and ribs are indicated in below figure: Question 8. Question 27. Answer: (a) During emergency conditions (e.g. Answer: The roots of a plant take up oxygen from the ………….. trapped between the ………….. particles.
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