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 c b d a 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 c b d a 3. Cramps caused during sudden activities are due to the formation of lactic acid excess of water ethanol acetic acid 5. Which of the following plays nose like function in plants? Flower Phloem Stomata Chlorophyll 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 a c b 6. The diagram given above shows part of the lining of the human trachea. What is the function of X? Phagocytosis Mucus removal Secretion of mucus Gaseous exchange 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? Oxygen Nitrogen Carbon dioxide Water vapour 8. Which of the following statements about the autotrophs is incorrect? They store carbohydrates in the form of starch They constitute the first trophic level in food chains They convert carbon dioxide and water into carbohydrates in the absence of sunlight They synthesise carbohydrates from carbon dioxide and water in the presence of sunlight and chlorophyll 9. In which of the following groups of organisms, food material is broken down outside the body and absorbed? Cuscuta, lice, tapeworm Yeast, mushroom, bread mould Mushroom, green plants, Amoeba Paramecium, Amoeba, Cuscuta 10. Select the correct statement. Heterotrophs do not synthesise their own food Heterotrophs synthesise their own food Heterotrophs are capable of converting carbon dioxide and water into carbohydrates Heterotrophs utilise solar energy for photosynthesis 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
