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TERMS AT A GLANCE, Respiration: Oxidation of food to release energy in living organisms, Cellular respiration: Oxidation of food within a cell, Lenticels: Openings in the bark (cork) of a tree to help diffusion of gases, Tracheae: The air tubes, Exercises, Objective Type Questions, A. Multiple choice questions., 1. In the body of the living organisms, energy from food is released by the process of, Respiration, c. Photosynthesis, of respiration?, Liver, d. Excretion, b. Digestion, 2. Which of the following is not associated with the, process, d. Tracheae, a. Lungs, b. Gills, 3. Normal range of breathing rate per minute, an adult person is:, b. 12-15, Le. 15–18, d. 18-24, a. 9-12, 4. The site for the exchange of gases within the lungs is, a. Tracheae, Bronchi, LG Alveoli, d. Diaphragm, с., 5. Gills are the respiratory organs in, c. Cockroach, d Tadpole, а. Man, C., Earthworm, 6. Which component of the air is absorbed by the blood from the air?, a. Nitrogen, Lb. Oxygen, c. Carbon dioxide, d. Water vapour, 7. Exhaled air in man contains more, a. Oxygen, 8. The respiratory pores present on the body of an insect are, c. Nitrogen, Carbon dioxide, d. None of these, LASpiracles, 9. The animal capable of breathing through lungs and also through its moist skin is, b. Stomata, Lenticels, d. Tracheae, C., a. Fish, Lb. Frog, Cockroach, C., d. Snake, 10. During anaerobic respiration, in a mixture of sugar and yeast which one of the following is not, produced, a. Carbon dioxide, b. Energy, 11. Which of the following animals has lungs for breathing?, c. Alcohol, d., Lactic acid, Lartrog, b. Tadpole, Fish, d. Earthworm, с., 150, Respiration, the Breath of Lik, 1

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12. The animal which breathes through its moist skin is:, b. Tadpole, Fish, d. Cockroach, a Earthworm, 13 The organism which survives on food without using air (oxygen) for respiration is, C., Earthworm, C., Cockroach, d. Yeast, с., a. Frog, 14 Which of the following animals has red blood cells (haemoglobin) as a part of its blood>, e. Mosquito, Cockroach, d. Housefly, с., a. Frog, B. Match the following:, Column 'B', Column 'A', 4a. Chlorophyll, 1. The pores on the lower surface of a leaf, 2. The pores on the lateral sides of the body of an insect b. Alcohol, Stomata, 3. Cuts or openings on bark (cork) of a tree, 4. The substance in leaves which traps sunlight energy, 1c., 2 d. Spiracles, 3 e. Lenticels, 5. Yeast respires anaerobically to produce, Diapragm, 4. The flexible sheet of the muscle at the floor, D. Give one word answers., 1. The process of oxidation of food within, living cells with the release of energy. Respination of the chest cavity which helps in breathing., 2. Air tubes in the body of an insect. Trachea, 3. Air sacs in the lungs of man. Alueoli, 5. The bony structure surrounding the chest, cavity. Rib cage, C. Fill in the blanks., chlorophyll, 5. Respiration in man is completed into two, 1. Carbon dioxide + water +, → Food + Water Vapour + Oxygen s Sunlight stages, breathing and Cellular Rospiration, 6. Haemoglobin is bright red when it is rich, 2. Food + Oxygen → Carbon dioxide +, Water vapour, Oxygen, 7. Frog respires through ungs, while on land and throughMaist, 8kin, 8. Haemoglobin is bluish red when it is rich, in _Carbon dioxde, Energy, in, 3. Yeast on being added to sugar solution, respires anaerobically to produce Ethyl, Alcohal, 4. Muscle fatigue is due to Lactic Acid, while under water., Theoretical Questions, A. Short answer type questions., 4. Give word formula to represent the, aerobic respiration by man and anaerobic, respiration by yeast, 5. In which type of respiration (aerobic or, anaerobic) a large amount of energy is, released from the same amount of food, 1. How do we produce alcohol from the waste, sugar?, 2. Why do the body cells in an organism need, regular supply of oxygen?., 3. What is the source of oxygen to the cells in, the body of human beings?, utilized?, Respiration, the Breath of Life, 151, 2