Ncert- science – class 7- Chapter 6 – Respiration in Organisms 2 Welcome to your Ncert- science – class 7- Chapter 6 – Respiration in Organisms 2What is the vital capacity of lungs of an average human? 4200 - 5500 ml 3000 - 4500 ml 500 - 1000 ml 1500 - 1800 ml None Pick the incorrect match. Cockroach spiracles Lungs mammals Stomata root hair Air spaces soil None The skin of an earthworm is ________ and ________. tough, soft hard, rough moist, slippery spiny, hard None The opening of the pharynx to larynx is guarded by Trachea Alveoli Epiglottis Adam’s apple 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 aquatic animals has only lungs as a respiratory organ? Frog Shark Fish Dolphin 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 16.4% 21% and 0.04% None Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process? Alcohol and lactic acid Lactic acid only Alcohol and CO2 Lactic acid and CO2 None In insects, air enters the body through Lungs Skin Gills Spiracles None Which microorganism plays its role in formation of alcohol? Yeast Algae Fungi Viruses None Yeast is used in wine and beer industries because it respires anaerobically producing CO2. anaerobically producing alcohol aerobically producing alcohol. aerobically producing oxygen., None Where are the respiratory enzymes located? Cristae Outer membrane Mitochondrial matrix Peri mitochondrial space None Which of the following processes is enhanced by increased physical activity? Inhalation Reproduction Breathing Excretion None What happens if the thoracic wall is punctured The man dies as the lungs get collapsed The lungs get inflated The breathing rate decreases The breathing rate increases None Blood is red coloured due to presence of Chloroplast Plastids Haemoglobin Leucoplast None During the process of exhalation, the ribs move up and outwards down and outwards down and inwards. up and inwards. None Which of the following are called breathing roots Pneumatophores Stomata Lenticels Rhizoids 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 (iii) (ii) and (iv) (i) and (iii) (i) and (ii) 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 Oxidation of food inside cell takes place in Mitochondria Ribosome Golgi bodies Chromosome 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.
