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