51. Which of the following is known as ‘graveyard of RBCs?
(a) Spleen
(b) Liver
(c) Bone marrow
(d) Appendix
52. Which of the following pairs has an open type of circulatory system?
(a) Cockroach and Silverfish
(b) Man and Whale
(c) Earthworm and Leech
(d) Tadpole larva and Fish
53. Which one of the following is responsible for converting milk into curd?
(a) Virus
(b) Yeast
(c) Fungi
(d) Bacteria
54. In how many groups can human blood be divided?
(a) 4
(b) 5
(c) 2
(d) 3
55. Antibodies are?
(a) Carbohydrates
(b) Enzymes
(c) Proteins
(d) Hormones
56. ‘Cod’ is a variety of
(a) Amphibia
(b) Crop
(c) Coral
(d) Fish
57. The thin layer that forms a common layer for any two cells is
(a) Middle lamella
(b) Secondary wall
(c) Primary wall
(d) None of the above
58. The poison of honey bee is –
(a) Saltish
(b) Acidic
(c) Protein
(d) Alkaline
59. Birds which swim in water have –
(a) Broad wings
(b) Long beaks
(c) Toes with claws
(d) Webbed feet
60. What is the average weight of Male’s brain?
(a) 46 ounce
(b) 48 ounce
(c) 47 ounce
(d) 49 ounce