1201. During formation of bread, the product that ‘raises’ the bread is _________.
A. Yeast *
B. Bacteria
C. Carbon Dioxide
D. Water
1202. Ageing in human beings is caused by disapperance of which of the following glands ?
A. Thyroid
B. Thymus *
C. Pituitary
D. Parathyroid
1203. 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
1204. The unit of energy produced by food in the human body is called _________.
A. Watt
B. DNA
C. Calorie *
D. Ampere
1205. The persons whose blood has a reduced capacity of delivering oxygen to tissues suffer from _________.
A. Haemophilia *
B. Sickle cell anaemia
C. Haemophilias
D. Anaemia
1206. Who among these was produced by genetics engineering ?
A. Jersey-sahiwal cow
B. Dhani ox
C. Nacy sheep
D. Rahu-thaila carp *
1207. Which one of the following is produced by hybridization and selective breeding ?
A. Neeli-Ravi Buffalo *
B. Rahu-Thaila hybrid
C. Sahiwal ox
D. All these
1208. Which one of the following is heredity disease?
A. Polio
B. Cholera
C. Typhoid
D. Hemophilia *
1209. Colorblind person cannot distinguish red from ___________.
A. Yellow
B. Blue
C. Green *
D. White
1210. 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