Extra Questions for Class – 10 Science Chapter – 6 Life Processes

Additional Questions and Answers  for Class -10 Science Chapter – 6 Life Processes

 

1. What are life processes ?

Ans: The process which together maintain various functions of living organisms are called life process.

2. What is nutrition ? 

Ans: Nutrition is a process of intake as well as utilization of nutrients.

3. Name the main modes of nutrition?

Ans: Autotrophic and heterotrophic.

4. What are autotroph? 

Ans: Organisms which can prepare their own food from inorganic substances such as water and carbon dioxide in presence of sunlight are called autotroph .

5. What are enzymes ?

Ans: enzymes are biocatalyst which help in faster biochemical process.

6. Name the largest gland of the body?

Ans: Liver.

7. What is the full form of ATP ?

Ans: Adenosine triphosphate.

8. Name the process by which energy is obtained by living organism.

Ans: Respiration.

9. What are the raw materials for photosynthesis ?

Ans: CO2 , water , sunlight , chlorophyll

10. Name the juice secreted by the liver ?

Ans : Bile juice.

11. What is the role of bile juice digestion ? 

Ans : It emulsifies the fat for further digestion and make the medium alkaline for the action of pancreatic enzyme.

12. In which part of the digestive canal food is absorbed ? 

Ans: Small intestine.

13. What is the first part of small intestine called as ? 

Ans: Duodenum.

14. Name an enzyme secreted by salivary glands as well as pancreas ? 

Ans: Amylase.

15. What is the site in cells where glucose is converted into 3 carbon molecule of pyruvate ?

Ans : Cytoplasm.

Extra Questions for Class -10 Science Chapter – 6 Life Processes

16. What are the modes of nutrition other than autotrophic nutrition ? 

Ans: Saprophytic , parasitic , holozoic.

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17. Give two examples of saprophytes .

Ans : Rhizopus and Mushroom

18. In which form carbohydrates are stored in plants ?

Ans: Starch.

19. Write two forms of metabolism .

Ans: Catabolism and anabolism.

20. Give two examples of plant parasite .

Ans : Cuscuta and Loranthus.

Extra Questions for Class -10 Science Chapter – 6 Life Processes

21. In which form carbohydrates are stored in our body ? 

Ans: Glycogen.

22. Define photosynthesis process ?

Ans : The process by which autotrophs take in substances from outside and convert them into stored forms of energy is called photosynthesis.

23. What is the site of photosynthesis in a leaf ? 

Ans: Chloroplast.

24. In which cells of the leaves does photosynthesis take place ? 

Ans:  Chlorophyll containing cells like palisade and spongy cells.

25. Which plants having variegated leaves ?

Ans : Money plant , Croton.

26. How do you test the presence of starch ?

Ans : Starch can be tested by adding iodine. The colour will change to blue black which proves the presence of starch.

27. What is the end product and the by product of photosynthesis ?

Ans: End product – Starch .

By product – Oxygen.

28. What is peristaltic movement ?

Ans : The rhythmic, contraction and relaxation movement of the alimentary canal is called peristaltic movement.

29. Which organelle of the cell in known as ‘ power house ‘ ?

Ans : Mitochondria .

30. What in the optimal temperature of respiration ?

Ans: 25º C – 35 º C

31. What does exchange of gases occur in our  lungs ? 

Ans : Alveoli .

32. From where does O 2 and CO2 move in and out of a leaf ? 

Ans : Stomata.

Extra Questions for Class -10 Science Chapter – 6 Life Processes

33. What is the medium of transport in most of the animals ? 

Ans: Blood.

34. Name the respiratory pigment in higher animals ?

Ans: Haemoglobin.

35. Name the blood vessel which carries blood away from the heart for purification ?

Ans: Pulmonary artery.

36. Which part of the heart receives the pure blood ?

Ans : Left auricle.

37. What is lymph ?

Ans: Lymph is an extra cellular fluid in transportation.

38. What is the impact of leakage or loss of blood upon the pressure?

Ans: Blood pressure decreases.

39.  Name the vein in which flows the oxygenated blood ?

Ans: Pulmonary vein.

Extra Questions for Class -10 Science Chapter – 6 Life Processes

40. Name the oxygen carrier in human blood ?

Ans: Haemoglobin.

41. Give the other name of which blood cells.

Ans: Leukocytes.

42. Name the main function of WBC ?

Ans: To protest the body against microbes.

43. Name the exceptional artery and vein ?

Ans: Pulmonary artery and pulmonary vein.

44. What makes red blood corpuscles red ?

Ans: A red coloured pigment named haemoglobin makes Red Blood Corpuscles red.

45. Where is water absorbed in the digestive system ?

Ans: Water is absorbed by villi of the large intestine.

46. What do you mean by the term transportation?

Ans: The circulation of water and minerals and other substances through out the body of plants and animals is called transportation.

47. What is the normal rate of heart beat ? What is normal blood pressure ?

Ans: 72 times per minute. Normal blood pressure is 120/ 80 mm Hg.

48.What is the basic unit of kidney ? 

Ans: Nephron.

49. Name the artificial method for the removal of liquid nitrogenous waste from the body ?

Ans: Dialysis.

Extra Questions for Class -10 Science Chapter – 6 Life Processes

50. What are the two functions of the kidneys ?

Ans: Excretion and osmoregulation .

Extra Questions for Class -10 Science Chapter – 6 Life Processes

51. Name the muscles of stomach which regulate the release  of food from stomach to small intestine .

Ans: Sphincture muscle.

52. Name the phloem elements which conduct food material.

Ans : Sieve tubes.

53. Which contains less nitrogeneous waste , the renal vein or the renal artery ?

Ans: Rend vien contains less nitrogenous waste.

54. Which enzyme, present in saliva breaks down starch ?

Ans: Salivary amylase.

Extra Questions for Class -10 Science Chapter – 6 Life Processes

55. Name two parasitic animals ?

Ans : Lice , Leech , Tapeworm .

56. What is the range of pH in small intestine and stomach respectively ?

Ans : pH in small intestine is greater than 7(basic/ alkaline medium)

pH in stomach is less than 7 (acidic medium)

57. What do the following transport :

1.     Xylem 
2. Pulmonary artery 
3. Pulmonary vein 
4. Vena cava

Ans: 

 

1. Xylem : Transports water and minerals.
2. Pulmonary artery : deoxygenated blood to lungs
3. Pulmonary vein : oxygenated blood to left atrium.
4. Vena cava : deoxygenated blood to heart right atrium.

 

58. Name the components of xylem and phloem ?

Ans : Xylem – Tracheids, vessels.

Phloem – Sieve tubes and companion cells

Extra Questions for Class -10 Science Chapter – 6 Life Processes for HSLC

 

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