Thiamine deficiency causes _____.

1. 1. rickets
   2. pellagra
   3. scurvy
   4. beri-beri

Fat of milk is readily digested by _____.

1. 1. intestinal juices
   2. gastric juices
   3. pancreatic juices
   4. None of these

The enzyme found in saliva is _____.

1. 1. ptylin
   2. slivase
   3. x-amylase
   4. pepsin

Sleeping sickness is transmitted by _____.

1. 1. louse
   2. mosquito
   3. bed-bug
   4. tse-tse fly

Head louse transmits _____.

1. 1. Scabies
   2. Typhoid
   3. Madness
   4. Sleeping sickness

The chemical nature of silk is _____.

1. 1. fat
   2. lipid
   3. protein
   4. carbohydrates

Silk is obtained from _____.

1. 1. the saliva of silk worm
   2. the cocoon of silk worm
   3. larvae of silk worm
   4. wings of silk worm

Eyes of insects are special. This is because _____.

1. 1. their eyes are big
   2. their eyes are bulging
   3. the insects can recognize the colour
   4. their eyes are compound

Earthworm is _____.

1. 1. bisexual
   2. uni-sexual
   3. is sometimes uni-sexual and sometimes bisexual
   4. None of the above

The live fluke, biologically called ‘Fasciola’ is found in _____.

1. 1. Bile-duct of sheep
   2. Gall bladder of man
   3. Liver of man
   4. Liver of sheep