Ncert- science – class 7- Chapter 6 – Respiration in Organisms 2 Welcome to your Ncert- science – class 7- Chapter 6 – Respiration in Organisms 2Oxidation of food inside cell takes place in Golgi bodies Ribosome Mitochondria Chromosome None Where are the respiratory enzymes located? Cristae Peri mitochondrial space Mitochondrial matrix Outer membrane None Pick the incorrect match. Air spaces soil Stomata root hair Cockroach spiracles Lungs mammals None Blood is red coloured due to presence of Chloroplast Haemoglobin Leucoplast Plastids None Which of the following are called breathing roots Rhizoids Lenticels Pneumatophores Stomata None What are the respective percentages of oxygen and carbon dioxide present in inhaled air? 21% and 16.4% 0.041% and 4.4% 16.4% and 4.4% 21% and 0.04% None In insects, air enters the body through Spiracles Gills Lungs Skin None During the process of exhalation, the ribs move up and outwards down and inwards. up and inwards. down and outwards None What is the vital capacity of lungs of an average human? 500 - 1000 ml 4200 - 5500 ml 1500 - 1800 ml 3000 - 4500 ml None The opening of the pharynx to larynx is guarded by Adam’s apple Trachea Epiglottis Alveoli None Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process? Lactic acid only Lactic acid and CO2 Alcohol and lactic acid Alcohol and CO2 None Which of the following processes is enhanced by increased physical activity? Breathing Excretion Reproduction Inhalation None Which of the following aquatic animals has only lungs as a respiratory organ? Dolphin Fish Shark Frog None The skin of an earthworm is ________ and ________. moist, slippery spiny, hard hard, rough tough, soft None Which microorganism plays its role in formation of alcohol? Algae Yeast Viruses Fungi None Which of the following parts of a plant do(es) not help in respiration? Leaves Stomata Xylem Root hair None Breathing is a process that provides O2 to the body.breaks down food to release energy.helps the body to get rid of CO2.produces water in the cells.Which of the following gives the correct combination of functions of breathing? (ii) and (iv) (i) and (iii) (ii) and (iii) (i) and (ii) None Yeast is used in wine and beer industries because it respires anaerobically producing alcohol aerobically producing alcohol. anaerobically producing CO2. aerobically producing oxygen., None What happens if the thoracic wall is punctured The breathing rate increases The man dies as the lungs get collapsed The breathing rate decreases The lungs get inflated None Earthworms and frogs breathe through their skin because of which the skin of both the organisms is moist and rough. moist and slimy. dry and slimy. dry and rough. None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
