Haemoglobin in the blood is a complex protein rich in _____.

1. 1. Gold
   2. Copper
   3. Silver
   4. Iron

As the number of micro-organisms in a soil increases, the amount of humus in the same soil _____.

1. 1. Decreases
   2. Increases
   3. Remains unchanged
   4. None of the above

The part of the body directly affected by Beri Beri disease is _____.

1. 1. Epidermal tissue
   2. Respiratory system
   3. Nervous system
   4. Bone tissue

As the amount of clay in a soil increases, its water retaining capacity _____.

1. 1. Increases
   2. Decreases
   3. Remains unchanged
   4. None of the above

Which of the following is a starch digesting enzyme?

1. 1. Ptyalin
   2. Lipase
   3. Renin
   4. Insulin

Which of the following has the highest fat content?

1. 1. Potato
   2. Milk
   3. Rice
   4. Sugar

The part of the body directly affected by Rabies is _____.

1. 1. Bone tissue
   2. Epidermal tissue
   3. Respiratory system
   4. Nervous system

The part of the body directly affected by Pneumonia is _____.

1. 1. Bone tissue
   2. Respiratory system
   3. Epidermal tissue
   4. Nervous system

The part of the body directly affected by Rickets is _____.

1. 1. Epidermal tissue
   2. Nervous system
   3. Bone tissue
   4. Respiratory system

The chief food of a butterfly larva is _____.

1. 1. Leaves of plants
   2. Decaying organic matter
   3. Nectar of flowers
   4. Micro-organisms found in water