41. The tubes which carry blood towards the heart are called?
(a) Arteries
(b) Intestines
(c) Veins
(d) None of these

 

42. What part of the body exchanges gases with air?
(a) The liver
(b) Stomach
(c) Lungs
(d) Intestines

 

43. Which organ is sometimes removed from the body and replaced with a new one?
(a) Heart
(b) Intestines
(c) Stomach
(d) Lungs

 

44. A cockroach has
(a) Three pairs of walking legs
(b) Two pairs of walking legs
(c) Four pairs of walking legs
(d) One pair of walking legs

 

45. A bat is
(a) A mammal
(b) A reptile
(c) An amphibian
(d) An avian

 

46. What is the average Female’s brain weight?
(a) 46 ounce
(b) 48 ounce
(c) 45 ounce
(d) 49 ounce

 

47. A “clinical death” takes place when
(a) there is no pulse
(b) there is no heartbeat
(c) pupils are fixed and dilated, and there is no reaction to light
(d) all the three conditions are present together

 

48. A “biological death” takes place when
(a) There is no pulse and heart
(b) Pupils show no reaction to light
(c) All the body cells die after a few hours of clinical death
(d) pupils are fixed and dilated

 

49. Chromosomes consist of
(a) DNA and lipids
(b) RNA and amino acids
(c) RNA and sugar
(d) DNA and proteins

 

50. Cockroach cannot survive in the water because its respiratory organ is
(a) Gill
(b) Booklung
(c) Trachea
(d) Pulmonary Sac