MCQ Chapter 9 Class 7 Science Curiosity NCERT Advertisement Life Processes in Animals 1. What is the process of breaking down complex food components into simpler forms called?AbsorptionDigestionRespirationEgestionQuestion 1 of 202. Which part of the human digestive system is the longest?StomachSmall intestineLarge intestineOesophagusQuestion 2 of 203. What role does saliva play in the mouth during digestion?Breaks down proteinsBreaks down starch into sugarNeutralizes acidsAbsorbs nutrientsQuestion 3 of 204. What is the primary function of the large intestine?Absorbs nutrientsBreaks down proteinsAbsorbs water and saltsStores digested foodQuestion 4 of 205. Which organ secretes bile to aid in fat digestion?PancreasLiverStomachSmall intestineQuestion 5 of 206. What is the wave-like motion that pushes food down the oesophagus called?Mechanical digestionPeristalsisAbsorptionRuminationQuestion 6 of 207. What protects the stomach lining from acid damage?BileMucusPancreatic juiceSalivaQuestion 7 of 208. What are the finger-like projections in the small intestine that increase nutrient absorption?AlveoliVilliGillsDiaphragmQuestion 8 of 209. What is the process of expelling waste from the body called?DigestionAbsorptionEgestionRespirationQuestion 9 of 2010. Which animals are known as ruminants?BirdsFishCows and buffaloesFrogsQuestion 10 of 2011. What does pancreatic juice do in digestion?Breaks down starch into sugarNeutralizes acids and breaks down carbohydrates, proteins, and fatsAbsorbs waterProtects the stomach liningQuestion 11 of 2012. Why does chewed rice show little to no color change with iodine in the saliva experiment?Starch is completely broken down into sugarsIodine does not react with riceSaliva prevents iodine from workingRice contains no starchQuestion 12 of 2013. What is the primary role of the stomach in digestion?Absorbs nutrientsBreaks down proteins into simpler componentsNeutralizes acidsStores wasteQuestion 13 of 2014. Which part of the respiratory system is responsible for gas exchange?NostrilsWindpipeAlveoliDiaphragmQuestion 14 of 2015. What happens to the diaphragm during inhalation?Moves upwardMoves downwardStays stillContracts and expandsQuestion 15 of 2016. Why does lime water turn milky when exhaled air is blown into it?It reacts with oxygenIt reacts with carbon dioxideIt reacts with nitrogenIt reacts with water vaporQuestion 16 of 2017. What is the role of the rib cage in the respiratory system?Filters airProtects the lungsAbsorbs oxygenProduces mucusQuestion 17 of 2018. What is the process of inhaling and exhaling air called?RespirationBreathingDigestionCirculationQuestion 18 of 2019. Which component of inhaled air is used to break down glucose during respiration?NitrogenCarbon dioxideOxygenWater vaporQuestion 19 of 2020. What is the chemical process that releases energy from nutrients called?BreathingRespirationDigestionEgestionQuestion 20 of 20 Loading...
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