Test-MCQ Class 10-NCERT -Science-Chapter 6-Test-1 Chapter 6: Life Processes Multiple Choice Questions No of Questions : 10 Marks: 10 Please enter your email: 1. Yeast respires anaerobically using sugar as a substrate. Out of the options given below, choose the correct combination of condition and product? Condition Product (a) Aerobic Alcohol (b) Aerobic Lactic acid (c) Anaerobic Alcohol (d) Anaerobic Lactic acid a c d b 2. The table shows the percentage composition of four samples of air. Which sample could have been breathed out by a person after vigorous exercise? Samples Oxygen Carbondioxide Water Vapour a 16 0.3 Saturated b 16 4 Saturated c 21 0.03 Trace d 21 3 Trace a b c d 3. Cramps caused during sudden activities are due to the formation of excess of water lactic acid acetic acid ethanol 5. Which of the following plays nose like function in plants? Chlorophyll Flower Stomata Phloem Which changes occur when a person breathe in deeply? Diaphragm Muscle External Intercostal Muscles a Contracts Contract b Contracts No Change c Relaxes Contract d Relaxes Relaxes d b a c 6. The diagram given above shows part of the lining of the human trachea. What is the function of X? Secretion of mucus Gaseous exchange Mucus removal Phagocytosis 7. The table given below shows the percentage composition of a gas in inspired and in expired air. %Composition Inspired Air Expired Air 21 16 What is the gas? Carbon dioxide Nitrogen Oxygen Water vapour 8. Which of the following statements about the autotrophs is incorrect? They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll They convert carbon dioxide and water into carbohydrates in the absence of sunlight They store carbohydrates in the form of starch They constitute the first trophic level in food chains 9. In which of the following groups of organisms, food material is broken down outside the body and absorbed? Cuscuta, lice, tapeworm Paramecium, Amoeba, Cuscuta Mushroom, green plants, Amoeba Yeast, mushroom, bread mould 10. Select the correct statement. Heterotrophs do not synthesise their own food Heterotrophs are capable of converting carbon dioxide and water into carbohydrates Heterotrophs utilise solar energy for photosynthesis Heterotrophs synthesise their own food Please Enter Your Name, School Name & Class in the given below box and submit: ( results will be shown within few moments after submit on same page ) Loading … Question 1 of 11
