101. During formation of bread, the product that ‘raises’ the bread is
(a) Yeast
(b) Bacteria
(c) Carbon dioxide
(d) Water
102. Ageing in human beings is caused by disappearance of which of the following glands?
(a) Thyroid
(b) Thymus
(c) Pituitary
(d) Parathyroid
103. Antigen is a substance which
(a) Lowers body temperature
(b) Destroys harmful bacteria
(c) Triggers the immune system
(d) Is used as an antidote to poison
104. The unit of energy produced by food in the human body is called
(a) Watt
(b) DNA
(c) Calorie
(d) Ampere
105. The persons whose blood has a reduced capacity of delivering oxygen to tissues suffer from
(a) Haemophilia
(b) Sickle cell anaemia
(c) Haemophilia
(d) Anaemia
106. Who among these was produced by genetics engineering?
(a) Jersey-Sahiwal cow
(b) Dhani ox
(c) Nacy sheep
(d) Rahu-thaila carp
107. Which one of the followings is produced by hybridization and selective breeding?
(a) Neeli-Ravi Buffalo
(b) Rahu-Thaila hybrid
(c) Sahiwal Ox
(d) All these
108. Which one of the following is heredity disease?
(a) Polio
(b) Cholera
(c) Typhoid
(d) Heamophilia
109. Colourblind person cannot distinguish red from
(a) Yellow
(b) Blue
(c) Green
(d) White
110. Who proposed theory of continuous and gradual evolution of life from simple to complex?
(a) Aristotle
(b) Hugo de Vries
(c) Thomas Malthus
(d) Charles Lyell