Life Process MCQs Quiz Multiple Choice Questions & Answers

1. ...............are the vessels which carryblood away from the heart to various organs of the body

1. Veins
2. spines
3. arteries
4. none of the above

2. ............takes in food using temporary finger-like extensions of the cell surface

1. Amoeba
2. green plants
3. tape worms
4. none of the above

3. Alternate contraction and relaxation of the alimentary canal is called

1. Peristalsis
2. Ingestion
3. Deglutition
4. None of these

4. Amphibians or many reptiles have....................chambered hearts

1. One
2. two
3. three
4. four

5. ATP can be used in the cells for the

1. Contraction of muscles
2. protein synthesis
3. conduction of nervous impulses
4. all of the above

6. Blood pressure is measured with an instrument called

1. Manometer
2. sphygmomanometer
3. hydrometer
4. anemometer

7. Breaking down of glucose in the presence of oxygen produces

1. Carbon dioxide
2. water
3. energy
4. all of the above

8. Carbon and energy requirements of the autotrophic organism are fulfilled by

1. enzymes
2. photosynthesis
3. bacteria
4. none of the above

9. Chlorophyll is contained in

1. leaf
2. stem
3. roots
4. both A and B

10. Conversion of large fat droplets into smaller droplets are

1. Anabolism
2. Neutralisation
3. Assimilation
4. Emulsification

11. Digestion is extracellular in

1. Animals
2. Human
3. Amoeba
4. All the above

12. Each kidney has large numbers of filtration units called

1. Nephrons
2. glomerulus
3. renal vein
4. none of the above

13. Example(s) of some organisms which derive nutrition from plants or animals without killing them

1. cuscuta
2. ticks
3. leeches
4. all of the above

14. Examples of some organism(s) break-down the food material outside the body and then absorb it

1. fungi
2. yeast
3. mushrooms
4. all of the above

15. Following are autotrophs

1. Green plants
2. Some bacteria
3. Enzymes
4. Both A and B

16. Following has shorter small intestine

1. Herbivores
2. carnivores
3. both A and B
4. none of the above

17. Following has to be transported by the blood

1. Oxygen
2. carbon dioxide
3. both A and B
4. none of the above

18. Following is (are) true about heart

1. Oxygen-rich blood from the lungs comes to the left atrium
2. De-oxygenated blood comes from the body to the upper chamber on the right, the right atrium, as it relaxes.
3. Valves ensure that blood does not flow backwards when the atria or ventricles contract
4. All of the above

19. Following is true

1. CO2 is removed from the blood in the lungs
2. Nitrogenous waste such as urea or uric acid are removed from blood in the kidneys
3. The purpose of making urine is to filter out waste products from the blood
4. All of the above

20. Following is true about lungs

1. Within the lungs, the passage divides into smaller and smaller tubes
2. The lungs always contain a residual volume of air so that there is sufficient time for oxygen to be absorbed
3. Both A and B
4. None of the above

21. Following is true for heterotrophs

1. Heterotrophs survival depends directly or indirectly on autotrophs
2. Heterotrophic organisms include animals and fungi
3. In heterotrophs, complex substances have to be broken down into simpler ones
4. All of the above

22. Following is true for plants

1. Plants have low energy needs
2. The xylem moves water and minerals obtained from the soil
3. Phloem transports products of photosynthesis from the leaves to other parts of the plant
4. All of the above

23. Following is true for tissue fluid or lymph

1. It is similar to the plasma of blood
2. It is colorless
3. It contains less protein
4. All of the above

24. Following used in photosynthesis is taken up from the soil by the roots in terrestrial plants

1. water
2. nitrogen
3. magnesium
4. all of the above

25. Gastric glands release ............, a protein digesting enzyme called pepsin, and mucus

1. Sulphuric acid
2. hydrochloric acid
3. nitric acid
4. none of the above

26. Glucose is a................carbon molecule

1. Four
2. five
3. six
4. seven

27. Haemoglobin is present in

1. Red blood corpuscles
2. White blood corpuscles
3. Plasma
4. None of the above

28. In human beings, the respiratory pigment is

1. Hemoglobin
2. insulin
3. enzyme
4. none of the above

29. Lactic acid is a...............carbon molecule

1. Three
2. four
3. five
4. six

30. ln order for the blood to flow from right ventricle to left ventricle in mammalian heart, it must flow through

1. Right ventricle pulmonary arteries, lungs, pulmonary veins, left atrium
2. Right ventricle, pulmonary veins, lungs, pulmonary arteries, left atrium
3. Right ventricle, right atrium, lungs, pulmonary veins, left atrium.
4. Right ventricle, systemic aorta, pulmonary veins, left atrium

31. Plasma transports...................in dissolved form

1. Food
2. carbon dioxide
3. nitrogenous wastes
4. all of the above

32. Pyruvate is a................carbon molecule

1. three
2. four
3. five
4. six

33. The ..............is basically a long tube extending from the mouth to the anus

1. Alimentary canal
2. oesophagus
3. diaphragm
4. bile duct

34. The end product of fat digestion is

1. Fatty acid
2. Glycerol
3. Aminoacids
4. Both A and B

35. The energy released during the process of respiration is used to make an...................molecule

1. ATP
2. ADP
3. AVP
4. ATC

36. The enzymes present in secrete intestinal juice finally convert the

1. Proteins to amino acids
2. Complex carbohydrates into glucose
3. Fats into fatty acids and glycerol
4. All of the above

37. The excretory system of human beings includes

1. A pair of kidneys
2. A pair of ureters
3. A urinary bladder and a urethra
4. All of the above

38. The following event(s) occur during photosynthesis

1. Absorption of light energy by chlorophyll
2. Conversion of light energy to chemical energy
3. Reduction of carbon dioxide to carbohydrates
4. All of the above

39. The inner lining of the small intestine has numerous finger-like projections called

1. Vitli
2. villi
3. vipli
4. none of the above

40. The kidney is associated with the cup-shaped end of a coiled tube called

1. Glomerulus
2. Bowmans capsule
3. collecting duct
4. none of the above

41. The loss of water in the form of vapour from the aerial parts of the plant is known as

1. Transpiration
2. respiration
3. transportation
4. none of the above

42. The normal systolic pressure is about ............mm of Hg and diastolic pressure is ..............mm of Hg

1. 100,60
2. 120,80
3. 140100
4. 160120

43. The process of acquiring Oxygen from outside the body and to use it in the process of breakdown of food sources for cellular needs is called

1. Respiration
2. Digestion
3. Transportation
4. Excretion

44. The process of breaking molecules in the absence of oxygen is called

1. Respiration
2. aerobic respiration
3. anaerobic respiration
4. none of the above

45. The processes which together perform the maintenance job are

1. Life proceedings
2. life processes
3. life maintenance
4. None of the above

46. The transport of soluble products of photosynthesis is called

1. Transpiration
2. respiration
3. transportation
4. translocation

47. The waste products removed from the body and discarded by a process is called

1. Respiration
2. Digestion
3. Transportation
4. Excretion

48. Tiny pores present on the surface of the leaves are known as

1. stomata
2. chloroplast
3. organelles
4. none of the above

49. What is utilised for providing energy to the plant

1. carbohydrates
2. vitamins
3. proteins
4. fats

50. Which of the following is an example of anabolic process

1. Digestion
2. Respiration
3. photosynthesis
4. Response to stimuli