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