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