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