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