(c) 6
   (d) 8
Ans: (a)
81. The saliva contains an enzyme called
   (a) ptyalin
   (b) pepsin
   (c) trypsin
   (d) erepsin
Ans: (a)
82. Infection of salivary glands by a virus leads to
   (a) tetanus
   (b) mumps
   (c) pyorrhoea
   (d) ulcers
Ans: (b)
83. The hormone that is responsible for secondary sexual character in the male is
   (a) oestrogen
   (b) progesterone
   (c) testosterone
   (d) prolactin
Ans: (c)
84. Saliva flows at the sight of food. This action is
   (a) involuntary
   (b) voluntary
   (c) a reflex
   (d) causative
Ans: (c)
85. The acid that is secreted in the stomach is
   (a) HCI
   (b) H2SO4
   (c) H2CO3
   (d) HNO3
Ans: (a)
86. The bile contains the pigments
   (a) haemoglobin and haemoerythrin
   (b) biliviridin and bilirubin
   (c) bilirubin and haemocyanin
   (d) haemoglobin and biliviridin
Ans: (b)
87. The liver destroys old
   (a) leucocytes
   (b) thrombocytes
   (c) erythrocytes
   (d) lymphocytes
Ans: (c)
88. Insulin is concerned with the metabolism of
   (a) sugar
   (b) fats
   (c) proteins
   (d) vitamins
Ans: (a)
89. Scurvy is prevented by vitamin
   (a) A
   (b) B
   (c) C
   (d) D
Ans: (c)
90. Which one is a water-soluble vitamin?
   (a) A
   (b) C
   (c) D